FPUS55 KPSR 212300 ZFPPSR Zone Forecast Product for Southwest Arizona/Southeast California National Weather Service Phoenix AZ 400 PM MST Sat Mar 21 2026 This is an automatically generated product that provides average values for large geographical areas and may not be representative of the exact location that you are interested in. For a more site specific forecast, please visit weather.gov/phoenix and either (1) Select a location from the dropdown menu above the map or (2) Click a location on the map. You can refine your selection by clicking on the map displayed on the resulting page. AZZ537-540-542>544-546-548-550-551-221100- Northwest Valley-Buckeye/Avondale-Deer Valley-Central Phoenix- North Phoenix/Glendale-Scottsdale/Paradise Valley-East Valley- South Mountain/Ahwatukee-Southeast Valley/Queen Creek- Including the cities of Circle City, Surprise, Wittmann, Beardsley, Sun City West, Avondale, Cashion, Goodyear, Liberty, Peoria, Phoenix, Paradise Valley, Mesa, Chandler, Tempe, Gilbert, Sun Lakes, and Queen Creek 400 PM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Mostly clear. Lows 63 to 71. West wind 5 to 10 mph in the evening becoming north around 5 mph after midnight. .SUNDAY...Partly sunny and hot. Highs 97 to 102. East wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 61 to 70. West wind 5 to 10 mph in the evening becoming east around 5 mph after midnight. .MONDAY...Sunny. Highs 94 to 99. East wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .MONDAY NIGHT...Clear. Lows 61 to 69. West wind 5 to 10 mph in the evening becoming north around 5 mph after midnight. .TUESDAY...Sunny and hot. Highs 95 to 101. .TUESDAY NIGHT...Clear. Lows 62 to 69. .WEDNESDAY...Sunny and hot. Highs 98 to 103. .WEDNESDAY NIGHT...Clear. Lows 63 to 69. .THURSDAY...Sunny and hot. Highs 98 to 104. .THURSDAY NIGHT...Clear. Lows 63 to 70. .FRIDAY...Partly sunny and hot. Highs 98 to 104. .FRIDAY NIGHT...Partly cloudy. Lows 64 to 70. .SATURDAY...Partly cloudy and hot. Highs 96 to 102. $$ AZZ541-549-555-221100- Cave Creek/New River-Fountain Hills/East Mesa- Apache Junction/Gold Canyon- Including the cities of Scottsdale, Fountain Hills, and Apache Junction 400 PM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Mostly clear. Lows 60 to 70. Northwest wind 5 to 10 mph in the evening becoming northeast after midnight. .SUNDAY...Partly sunny and hot. Highs 97 to 102. East wind 5 to 10 mph in the morning becoming southwest in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 58 to 68. Northwest wind around 5 mph in the evening becoming east after midnight. .MONDAY...Mostly sunny. Highs 94 to 99. Southeast wind 5 to 10 mph in the morning becoming southwest in the afternoon. .MONDAY NIGHT...Clear. Lows 57 to 67. Northwest wind 5 to 10 mph in the evening becoming northeast around 5 mph after midnight. .TUESDAY...Sunny and hot. Highs 94 to 100. .TUESDAY NIGHT...Clear. Lows 63 to 68. .WEDNESDAY...Sunny and hot. Highs 96 to 102. .WEDNESDAY NIGHT...Clear. Lows 64 to 69. .THURSDAY...Sunny and hot. Highs 97 to 103. .THURSDAY NIGHT...Clear. Lows 64 to 69. .FRIDAY...Partly sunny and hot. Highs 97 to 103. .FRIDAY NIGHT...Partly cloudy. Lows 65 to 70. .SATURDAY...Partly sunny and hot. Highs 94 to 100. $$ AZZ553-554-221100- Northwest Pinal County-West Pinal County- Including the cities of Casa Grande, Cactus Forest, Florence, and Coolidge 400 PM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Mostly clear. Lows 59 to 69. West wind 5 to 10 mph in the evening becoming south around 5 mph after midnight. .SUNDAY...Mostly sunny in the morning then becoming partly sunny. Hot. Highs 97 to 102. Southeast wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 56 to 66. West wind 5 to 10 mph in the evening becoming south around 5 mph after midnight. .MONDAY...Sunny and hot. Highs 95 to 100. Southeast wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .MONDAY NIGHT...Clear. Lows 56 to 66. West wind 5 to 10 mph in the evening becoming light after midnight. .TUESDAY...Sunny and hot. Highs 95 to 101. .TUESDAY NIGHT...Clear. Lows 58 to 66. .WEDNESDAY...Sunny and hot. Highs 98 to 104. .WEDNESDAY NIGHT...Clear. Lows 58 to 67. .THURSDAY...Sunny and hot. Highs 99 to 105. .THURSDAY NIGHT...Clear. Lows 58 to 67. .FRIDAY...Partly sunny and hot. Highs 98 to 104. .FRIDAY NIGHT...Partly cloudy. Lows 61 to 69. .SATURDAY...Partly cloudy and hot. Highs 96 to 102. $$ AZZ532-221100- Yuma- Including the cities of Yuma and Fortuna Foothills 400 PM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Mostly clear. Lows 65 to 69. Northwest wind 5 to 10 mph. .SUNDAY...Mostly sunny and hot. Highs near 101. West wind 5 to 10 mph. .SUNDAY NIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 62 to 66. Southwest wind 5 to 10 mph in the evening becoming southeast after midnight. .MONDAY...Sunny. Not as warm. Highs near 95. South wind 10 to 15 mph. .MONDAY NIGHT...Clear. Lows 59 to 63. Southeast wind 5 to 15 mph. .TUESDAY...Sunny. Highs in the mid to upper 90s. .TUESDAY NIGHT...Clear. Lows in the lower to mid 60s. .WEDNESDAY...Sunny and hot. Highs 99 to 103. .WEDNESDAY NIGHT...Clear. Lows 61 to 66. .THURSDAY...Sunny and hot. Highs 101 to 103. .THURSDAY NIGHT...Clear. Lows 62 to 68. .FRIDAY...Partly sunny and hot. Highs 100 to 104. .FRIDAY NIGHT...Partly cloudy. Lows in the mid to upper 60s. .SATURDAY...Partly cloudy and hot. Highs 100 to 102. $$ AZZ562-221100- Globe/Miami- Including the cities of Globe and Miami 400 PM MST Sat Mar 21 2026 .TONIGHT...Mostly clear. Lows 55 to 65. West wind 10 to 15 mph in the evening becoming north around 5 mph after midnight. .SUNDAY...Partly sunny. Highs 85 to 95. Northeast wind around 5 mph in the morning becoming west 5 to 15 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 52 to 62. West wind 5 to 10 mph in the evening becoming southeast around 5 mph after midnight. .MONDAY...Mostly sunny. Highs 83 to 93. Southeast wind around 5 mph in the morning becoming southwest 5 to 15 mph in the afternoon. .MONDAY NIGHT...Clear. Lows 50 to 60. Northwest wind 5 to 10 mph in the evening becoming northeast around 5 mph after midnight. .TUESDAY...Sunny. Highs near 90. .TUESDAY NIGHT...Clear. Lows near 60. .WEDNESDAY...Sunny. Highs 91 to 97. .WEDNESDAY NIGHT...Clear. Lows near 60. .THURSDAY...Sunny. Highs 90 to 96. .THURSDAY NIGHT...Clear. Lows near 60. .FRIDAY...Sunny in the morning then becoming partly sunny. Highs 89 to 95. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s. .SATURDAY...Partly cloudy. Highs 85 to 91. $$ AZZ545-547-552-561-221100- New River Mesa-Rio Verde/Salt River-Superior-Dripping Springs- Including the cities of Tortilla Flat, Superior, Hayden, and Winkelman 400 PM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Mostly clear. Lows 61 to 71. West wind 5 to 10 mph in the evening becoming northeast after midnight. .SUNDAY...Partly sunny and hot. Highs 96 to 101. East wind 5 to 10 mph in the morning becoming southwest in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 58 to 68. Northwest wind 5 to 10 mph in the evening becoming east around 5 mph after midnight. .MONDAY...Mostly sunny. Highs 93 to 98. Southeast wind 5 to 10 mph in the morning becoming southwest in the afternoon. .MONDAY NIGHT...Mostly clear. Lows 57 to 67. Northwest wind 5 to 10 mph in the evening becoming northeast after midnight. .TUESDAY...Sunny. Highs 87 to 99. .TUESDAY NIGHT...Clear. Lows 59 to 68. .WEDNESDAY...Sunny and hot. Highs 90 to 102. .WEDNESDAY NIGHT...Clear. Lows 60 to 68. .THURSDAY...Sunny and hot. Highs 90 to 102. .THURSDAY NIGHT...Clear. Lows 61 to 69. .FRIDAY...Sunny in the morning then becoming partly sunny. Hot. Highs 90 to 102. .FRIDAY NIGHT...Partly cloudy. Lows 62 to 70. .SATURDAY...Partly cloudy. Highs 87 to 99. $$ AZZ556>558-221100- Tonto Basin-Mazatzal Mountains-Pinal/Superstition Mountains- Including the cities of Punkin Center and Sunflower 400 PM MST Sat Mar 21 2026 .TONIGHT...Mostly clear. Lows 57 to 67. West wind 10 to 15 mph in the evening becoming north 5 to 10 mph after midnight. .SUNDAY...Partly sunny. Highs 91 to 96. East wind 5 to 10 mph in the morning becoming southwest 10 to 15 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 55 to 65. West wind 10 to 15 mph in the evening becoming southeast 5 to 10 mph after midnight. .MONDAY...Mostly sunny. Highs 89 to 94. Southeast wind 5 to 10 mph in the morning becoming southwest 10 to 15 mph in the afternoon. .MONDAY NIGHT...Clear. Lows 53 to 63. Northwest wind 5 to 10 mph in the evening becoming northeast after midnight. .TUESDAY...Sunny. Highs 81 to 95. .TUESDAY NIGHT...Clear. Lows 56 to 64. .WEDNESDAY...Sunny. Highs 83 to 97. .WEDNESDAY NIGHT...Clear. Lows 56 to 64. .THURSDAY...Sunny. Highs 83 to 97. .THURSDAY NIGHT...Clear. Lows 56 to 65. .FRIDAY...Sunny in the morning then becoming partly sunny. Highs 83 to 97. .FRIDAY NIGHT...Partly cloudy. Lows 56 to 65. .SATURDAY...Partly cloudy. Highs 79 to 93. $$ AZZ560-563-221100- San Carlos-Southeast Gila County- Including the cities of San Carlos and Peridot 400 PM MST Sat Mar 21 2026 .TONIGHT...Mostly clear. Lows 56 to 66. West wind 10 to 15 mph in the evening becoming northeast around 5 mph after midnight. .SUNDAY...Partly sunny. Highs 85 to 95. East wind 5 to 10 mph in the morning becoming west 5 to 15 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 53 to 63. Northwest wind 10 to 15 mph in the evening becoming northeast around 5 mph after midnight. .MONDAY...Mostly sunny. Highs 83 to 93. East wind 5 to 10 mph in the morning becoming southwest 5 to 15 mph in the afternoon. .MONDAY NIGHT...Clear. Lows 52 to 62. Northwest wind 5 to 10 mph in the evening becoming northeast around 5 mph after midnight. .TUESDAY...Sunny. Highs 80 to 94. .TUESDAY NIGHT...Clear. Lows 44 to 62. .WEDNESDAY...Sunny. Highs 83 to 97. .WEDNESDAY NIGHT...Clear. Lows 44 to 63. .THURSDAY...Sunny. Highs 83 to 97. .THURSDAY NIGHT...Clear. Lows 43 to 63. .FRIDAY...Mostly sunny. Highs 81 to 95. .FRIDAY NIGHT...Partly cloudy. Lows 44 to 64. .SATURDAY...Partly cloudy. Highs 77 to 91. $$ AZZ539-559-221100- Gila Bend-Sonoran Desert Natl Monument- Including the cities of Gila Bend, Sentinel, and Kaka 400 PM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Mostly clear. Lows 64 to 74. West wind 5 to 10 mph in the evening becoming south around 5 mph after midnight. .SUNDAY...Mostly sunny in the morning then becoming partly sunny. Hot. Highs 98 to 103. Southwest wind 5 to 10 mph. .SUNDAY NIGHT...Partly cloudy. Lows 60 to 70. Southwest wind 5 to 10 mph. .MONDAY...Mostly sunny. Highs 94 to 99. South wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .MONDAY NIGHT...Clear. Lows 58 to 68. Southwest wind 5 to 10 mph in the evening becoming southeast around 5 mph after midnight. .TUESDAY...Sunny and hot. Highs 95 to 101. .TUESDAY NIGHT...Clear. Lows 60 to 69. .WEDNESDAY...Sunny and hot. Highs 98 to 104. .WEDNESDAY NIGHT...Clear. Lows 61 to 71. .THURSDAY...Sunny and hot. Highs 98 to 104. .THURSDAY NIGHT...Clear. Lows 62 to 71. .FRIDAY...Partly sunny and hot. Highs 98 to 104. .FRIDAY NIGHT...Partly cloudy. Lows 65 to 73. .SATURDAY...Partly cloudy and hot. Highs 97 to 102. $$ AZZ534-538-221100- Aguila Valley-Tonopah Desert- Including the cities of Aguila, Gladden, Wickenburg, Arlington, Hassayampa, Tonopah, and Wintersburg 400 PM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Mostly clear. Lows 61 to 71. Northwest wind 5 to 10 mph. .SUNDAY...Partly sunny and hot. Highs 96 to 101. East wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 58 to 68. Southwest wind 5 to 10 mph in the evening becoming northeast around 5 mph after midnight. .MONDAY...Sunny. Highs 93 to 98. East wind 5 to 10 mph in the morning becoming southwest in the afternoon. .MONDAY NIGHT...Clear. Lows 57 to 67. Southwest wind 5 to 10 mph in the evening becoming light after midnight. .TUESDAY...Sunny. Highs 93 to 99. .TUESDAY NIGHT...Clear. Lows 58 to 67. .WEDNESDAY...Sunny and hot. Highs 96 to 102. .WEDNESDAY NIGHT...Clear. Lows 59 to 69. .THURSDAY...Sunny and hot. Highs 96 to 104. .THURSDAY NIGHT...Clear. Lows 60 to 70. .FRIDAY...Partly sunny and hot. Highs 96 to 103. .FRIDAY NIGHT...Partly cloudy. Lows 61 to 72. .SATURDAY...Partly cloudy and hot. Highs 93 to 101. $$ AZZ531-533-221100- Kofa-Central La Paz- Including the cities of Palm Canyon, Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, and Salome 400 PM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Mostly clear in the evening then becoming partly cloudy. Lows 62 to 72. West wind 5 to 10 mph. .SUNDAY...Partly sunny and hot. Highs 96 to 101. Southwest wind 5 to 10 mph. .SUNDAY NIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 60 to 70. Southwest wind 5 to 10 mph in the evening becoming southeast around 5 mph after midnight. .MONDAY...Sunny. Highs 94 to 99. South wind 5 to 10 mph. .MONDAY NIGHT...Clear. Lows 57 to 67. South wind 5 to 10 mph in the evening becoming east around 5 mph after midnight. .TUESDAY...Sunny. Highs 91 to 99. .TUESDAY NIGHT...Clear. Lows 59 to 69. .WEDNESDAY...Sunny and hot. Highs 94 to 102. .WEDNESDAY NIGHT...Clear. Lows 60 to 70. .THURSDAY...Sunny and hot. Highs 95 to 103. .THURSDAY NIGHT...Clear. Lows 60 to 71. .FRIDAY...Partly sunny and hot. Highs 95 to 103. .FRIDAY NIGHT...Partly cloudy. Lows 62 to 73. .SATURDAY...Partly cloudy and hot. Highs 94 to 102. $$ AZZ535-536-221100- Southeast Yuma County-Gila River Valley- Including the city of Ligurta 400 PM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Mostly clear in the evening then becoming partly cloudy. Lows 61 to 71. West wind 5 to 10 mph. .SUNDAY...Mostly sunny in the morning then becoming partly sunny. Hot. Highs 97 to 102. West wind 5 to 10 mph. .SUNDAY NIGHT...Partly cloudy and cooler. Lows 56 to 66. South wind 5 to 10 mph. .MONDAY...Sunny. Highs 93 to 98. South wind 5 to 15 mph. .MONDAY NIGHT...Mostly clear. Lows 55 to 65. South wind 5 to 10 mph. .TUESDAY...Sunny. Highs 93 to 99. .TUESDAY NIGHT...Clear. Lows 57 to 66. .WEDNESDAY...Sunny and hot. Highs 99 to 103. .WEDNESDAY NIGHT...Clear. Lows 58 to 68. .THURSDAY...Sunny and hot. Highs 100 to 104. .THURSDAY NIGHT...Clear. Lows 59 to 69. .FRIDAY...Partly sunny and hot. Highs 99 to 103. .FRIDAY NIGHT...Partly cloudy. Lows 62 to 71. .SATURDAY...Partly cloudy and hot. Highs 98 to 102. $$ AZZ530-CAZ569-221100- Parker Valley-Palo Verde Valley- Including the cities of Parker, Ehrenberg, Martinez Lake, Blythe, Palo Verde, and Ripley 400 PM MST Sat Mar 21 2026 /400 PM PDT Sat Mar 21 2026/ ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST /8 PM PDT/ SUNDAY... .TONIGHT...Partly cloudy. Lows 60 to 70. Southwest wind 5 to 15 mph. .SUNDAY...Mostly sunny in the morning then becoming partly sunny. Hot. Highs 97 to 102. West wind 5 to 10 mph. .SUNDAY NIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 57 to 67. South wind 5 to 10 mph. .MONDAY...Sunny and hot. Highs 95 to 100. South wind 5 to 15 mph. .MONDAY NIGHT...Clear. Lows 54 to 64. South wind 5 to 15 mph. .TUESDAY...Sunny and hot. Highs 95 to 101. .TUESDAY NIGHT...Clear. Lows 58 to 65. .WEDNESDAY...Sunny and hot. Highs 98 to 104. .WEDNESDAY NIGHT...Clear. Lows 59 to 67. .THURSDAY...Sunny and hot. Highs 99 to 105. .THURSDAY NIGHT...Clear. Lows 60 to 67. .FRIDAY...Partly sunny and hot. Highs 99 to 105. .FRIDAY NIGHT...Partly cloudy. Lows 61 to 69. .SATURDAY...Partly cloudy and hot. Highs 98 to 104. $$ CAZ564-565-568-570-221100- Chuckwalla Mountains-Imperial County Southeast-Chiriaco Summit- Chuckwalla Valley- Including the cities of Imperial Hot Mineral Springs, Winterhaven, Chiriaco Summit, and Midland 400 PM PDT Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TONIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 62 to 72. West wind 5 to 15 mph. .SUNDAY...Mostly sunny in the morning then becoming partly sunny. Hot. Highs 96 to 101. Northwest wind 5 to 10 mph in the morning becoming west in the afternoon. .SUNDAY NIGHT...Partly cloudy in the evening then becoming clear. Lows 60 to 70. Southwest wind 5 to 10 mph. .MONDAY...Sunny. Highs 94 to 99. South wind 5 to 15 mph. .MONDAY NIGHT...Clear. Lows 58 to 68. South wind 10 to 15 mph in the evening decreasing to around 5 mph after midnight. .TUESDAY...Sunny. Highs 89 to 99. .TUESDAY NIGHT...Clear. Lows 60 to 70. .WEDNESDAY...Sunny and hot. Highs 93 to 103. .WEDNESDAY NIGHT...Clear. Lows 61 to 70. .THURSDAY...Sunny and hot. Highs 93 to 103. .THURSDAY NIGHT...Clear. Lows 62 to 72. .FRIDAY...Mostly sunny and hot. Highs 93 to 103. .FRIDAY NIGHT...Partly cloudy. Lows 63 to 73. .SATURDAY...Partly cloudy and hot. Highs 93 to 103. $$ CAZ563-567-221100- Salton Sea-Imperial Valley- Including the cities of Desert Shores, El Centro, Calexico, Alamorio, and Brawley 400 PM PDT Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TONIGHT...Mostly clear. Lows 63 to 73. West wind 10 to 20 mph in the evening decreasing to 5 to 10 mph after midnight. .SUNDAY...Mostly sunny in the morning then becoming partly sunny. Hot. Highs 99 to 104. West wind 5 to 10 mph. .SUNDAY NIGHT...Mostly clear. Lows 60 to 70. West wind 5 to 10 mph in the evening becoming southeast around 5 mph after midnight. .MONDAY...Sunny and hot. Highs 96 to 101. Southeast wind 5 to 10 mph. .MONDAY NIGHT...Clear. Lows 59 to 69. Southeast wind 5 to 10 mph. .TUESDAY...Mostly sunny and hot. Highs 92 to 100. .TUESDAY NIGHT...Clear. Lows 60 to 70. .WEDNESDAY...Sunny and hot. Highs 95 to 105. .WEDNESDAY NIGHT...Clear. Lows 61 to 71. .THURSDAY...Sunny and hot. Highs 96 to 106. .THURSDAY NIGHT...Clear. Lows 62 to 71. .FRIDAY...Partly sunny and hot. Highs 97 to 105. .FRIDAY NIGHT...Partly cloudy. Lows 64 to 73. .SATURDAY...Partly cloudy and hot. Highs 96 to 104. $$ CAZ566-221100- Imperial County West- Including the cities of Coolidge Springs, Salton City, Winona, Coyote Wells, Ocotillo, and Plaster City 400 PM PDT Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TONIGHT...Partly cloudy and breezy. Lows 65 to 75. West wind 10 to 20 mph. Gusts up to 30 mph in the evening. .SUNDAY...Mostly sunny in the morning then becoming partly sunny. Hot. Highs 98 to 103. Northwest wind 5 to 10 mph. .SUNDAY NIGHT...Mostly clear. Lows 62 to 72. West wind 5 to 15 mph. .MONDAY...Sunny and hot. Highs 96 to 101. Southeast wind 5 to 10 mph. .MONDAY NIGHT...Mostly clear. Lows 61 to 71. Southeast wind 5 to 10 mph in the evening becoming northwest around 5 mph after midnight. .TUESDAY...Sunny and hot. Highs 96 to 100. .TUESDAY NIGHT...Clear. Lows 62 to 73. .WEDNESDAY...Sunny and hot. Highs 100 to 104. .WEDNESDAY NIGHT...Clear. Lows 63 to 73. .THURSDAY...Sunny and hot. Highs 101 to 105. .THURSDAY NIGHT...Clear. Lows 64 to 74. .FRIDAY...Partly sunny and hot. Highs 101 to 105. .FRIDAY NIGHT...Partly cloudy. Lows 65 to 76. .SATURDAY...Partly cloudy and hot. Highs 100 to 104. $$ CAZ562-221100- Imperial County Southwest- Including the city of Mountain Spring 400 PM PDT Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TONIGHT...Partly cloudy and windy. Lows 69 to 79. West wind 15 to 25 mph. Gusts up to 40 mph. .SUNDAY...Mostly sunny in the morning then becoming partly sunny. Hot. Highs 97 to 102. West wind 10 to 20 mph. .SUNDAY NIGHT...Mostly clear. Lows 66 to 76. West wind 10 to 20 mph. .MONDAY...Sunny and hot. Highs 96 to 101. Southwest wind 5 to 10 mph in the morning becoming southeast in the afternoon. .MONDAY NIGHT...Mostly clear. Lows 65 to 75. Southwest wind 5 to 10 mph. .TUESDAY...Sunny and hot. Highs 90 to 100. .TUESDAY NIGHT...Clear. Lows 66 to 77. .WEDNESDAY...Sunny and hot. Highs 94 to 104. .WEDNESDAY NIGHT...Clear. Lows 67 to 77. .THURSDAY...Sunny and hot. Highs 95 to 105. .THURSDAY NIGHT...Mostly clear. Lows 67 to 78. .FRIDAY...Partly sunny and hot. Highs 94 to 104. .FRIDAY NIGHT...Partly cloudy. Lows 68 to 79. .SATURDAY...Partly cloudy and hot. Highs 93 to 103. $$ CAZ560-221100- Joshua Tree NP West- Including the cities of Cottonwood Visitor and Lost Horse-Keys Village 400 PM PDT Sat Mar 21 2026 .TONIGHT...Partly cloudy and breezy. Lows 59 to 69. West wind 10 to 20 mph in the evening decreasing to 5 to 10 mph after midnight. Gusts up to 30 mph in the evening. .SUNDAY...Partly sunny. Highs 80 to 90. West wind 5 to 10 mph. .SUNDAY NIGHT...Mostly clear. Lows 58 to 68. West wind 5 to 10 mph. .MONDAY...Sunny. Highs 80 to 90. Southwest wind 5 to 15 mph. .MONDAY NIGHT...Clear. Lows 57 to 67. West wind 5 to 15 mph. .TUESDAY...Sunny. Highs 80 to 90. .TUESDAY NIGHT...Clear. Lows 56 to 68. .WEDNESDAY...Sunny. Highs 82 to 92. .WEDNESDAY NIGHT...Clear. Lows 54 to 67. .THURSDAY...Sunny. Highs 82 to 92. .THURSDAY NIGHT...Clear. Lows 55 to 69. .FRIDAY...Partly sunny. Highs 82 to 92. .FRIDAY NIGHT...Partly cloudy. Lows 56 to 70. .SATURDAY...Partly sunny. Highs 81 to 91. $$ CAZ561-221100- Joshua Tree NP East- 400 PM PDT Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TONIGHT...Partly cloudy. Lows 60 to 70. West wind 5 to 15 mph. .SUNDAY...Partly sunny. Not as warm. Highs 87 to 97. Northwest wind 5 to 15 mph. .SUNDAY NIGHT...Partly cloudy in the evening then becoming clear. Lows 59 to 69. West wind 5 to 10 mph. .MONDAY...Sunny. Highs 87 to 97. Southwest wind around 5 mph in the morning becoming south 10 to 15 mph in the afternoon. .MONDAY NIGHT...Clear. Lows 58 to 68. Southwest wind 5 to 15 mph. .TUESDAY...Sunny. Highs 89 to 97. .TUESDAY NIGHT...Clear. Lows 63 to 69. .WEDNESDAY...Sunny. Highs 91 to 99. .WEDNESDAY NIGHT...Clear. Lows 63 to 68. .THURSDAY...Sunny. Highs 91 to 99. .THURSDAY NIGHT...Clear. Lows 63 to 69. .FRIDAY...Partly sunny. Highs 91 to 99. .FRIDAY NIGHT...Partly cloudy. Lows 63 to 69. .SATURDAY...Partly cloudy. Highs 91 to 99. $$ Visit us on Facebook, Twitter, and at weather.gov/phoenix