FPUS55 KPSR 210741 ZFPPSR Zone Forecast Product for Southwest Arizona/Southeast California National Weather Service Phoenix AZ 1240 AM 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>544-546-548-550-551-211100- 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 1241 AM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Clear. Lows 62 to 70. Northeast wind around 5 mph. .SATURDAY...Sunny and hot. Highs 101 to 105. East wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Clear in the evening then becoming partly cloudy. Lows 63 to 72. 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 63 to 70. West wind 5 to 10 mph in the evening becoming east around 5 mph after midnight. .MONDAY...Mostly sunny. Highs 94 to 100. .MONDAY NIGHT...Clear. Lows 62 to 68. .TUESDAY...Sunny and hot. Highs 95 to 101. .TUESDAY NIGHT...Clear. Lows 63 to 70. .WEDNESDAY...Sunny and hot. Highs 98 to 103. .WEDNESDAY NIGHT...Clear. Lows 63 to 70. .THURSDAY...Sunny and hot. Highs 98 to 104. .THURSDAY NIGHT...Clear. Lows 64 to 69. .FRIDAY...Partly sunny and hot. Highs 98 to 104. $$ AZZ541-549-555-211100- Cave Creek/New River-Fountain Hills/East Mesa- Apache Junction/Gold Canyon- Including the cities of Scottsdale, Fountain Hills, and Apache Junction 1241 AM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Clear. Lows 60 to 70. Northeast wind 5 to 10 mph. .SATURDAY...Sunny and hot. Highs 100 to 105. East wind 5 to 10 mph in the morning becoming southwest in the afternoon. .SATURDAY NIGHT...Clear in the evening then becoming partly cloudy. Lows 60 to 70. Northwest wind 5 to 10 mph in the evening becoming northeast after midnight. .SUNDAY...Partly sunny and hot. Highs 96 to 101. East wind 5 to 10 mph in the morning becoming southwest in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 58 to 68. Northwest wind 5 to 10 mph in the evening becoming east around 5 mph after midnight. .MONDAY...Sunny. Highs 93 to 99. .MONDAY NIGHT...Clear. Lows in the 60s. .TUESDAY...Sunny and hot. Highs 94 to 100. .TUESDAY NIGHT...Clear. Lows 64 to 69. .WEDNESDAY...Sunny and hot. Highs 97 to 101. .WEDNESDAY NIGHT...Clear. Lows 64 to 69. .THURSDAY...Sunny and hot. Highs 97 to 103. .THURSDAY NIGHT...Clear. Lows 64 to 69. .FRIDAY...Partly sunny and hot. Highs 97 to 103. $$ AZZ553-554-211100- Northwest Pinal County-West Pinal County- Including the cities of Casa Grande, Cactus Forest, Florence, and Coolidge 1241 AM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Clear. Lows 59 to 69. South wind around 5 mph. .SATURDAY...Sunny and hot. Highs 101 to 106. Southeast wind around 5 mph in the morning becoming northwest 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 59 to 69. West wind around 5 mph in the evening becoming south after midnight. .SUNDAY...Partly sunny and hot. Highs 98 to 103. 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 94 to 100. .MONDAY NIGHT...Clear. Lows 58 to 65. .TUESDAY...Sunny and hot. Highs 95 to 101. .TUESDAY NIGHT...Clear. Lows 58 to 67. .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 59 to 68. .FRIDAY...Partly sunny and hot. Highs 98 to 104. $$ AZZ532-211100- Yuma- Including the cities of Yuma and Fortuna Foothills 1241 AM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Clear. Not as cool. Lows 65 to 69. Light wind. .SATURDAY...Sunny and hot. Highs near 105. North wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 65 to 68. Northwest wind 5 to 10 mph. .SUNDAY...Mostly sunny and hot. Highs near 100. Northwest wind 5 to 10 mph in the morning becoming west in the afternoon. .SUNDAY NIGHT...Partly cloudy in the evening then becoming clear. Lows 61 to 65. South wind 5 to 10 mph. .MONDAY...Sunny. Not as warm. Highs in the 90s. .MONDAY NIGHT...Clear. Lows in the lower to mid 60s. .TUESDAY...Sunny. Highs in the mid to upper 90s. .TUESDAY NIGHT...Clear. Lows 60 to 65. .WEDNESDAY...Sunny and hot. Highs 98 to 102. .WEDNESDAY NIGHT...Clear. Lows 62 to 67. .THURSDAY...Sunny and hot. Highs 100 to 102. .THURSDAY NIGHT...Mostly clear. Lows 62 to 67. .FRIDAY...Mostly sunny and hot. Highs 101 to 103. $$ AZZ562-211100- Globe/Miami- Including the cities of Globe and Miami 1241 AM MST Sat Mar 21 2026 .TONIGHT...Clear. Lows 56 to 66. Northwest wind around 5 mph. .SATURDAY...Sunny. Highs 87 to 97. Southeast wind around 5 mph in the morning becoming west 5 to 15 mph in the afternoon. .SATURDAY NIGHT...Clear in the evening then becoming partly cloudy. Lows 55 to 65. Northwest wind 5 to 10 mph. .SUNDAY...Partly sunny. Highs 84 to 94. Southeast 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 south around 5 mph after midnight. .MONDAY...Sunny. Highs 87 to 93. .MONDAY NIGHT...Clear. Lows near 60. .TUESDAY...Sunny. Highs 88 to 94. .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 in the lower 60s. .FRIDAY...Mostly sunny. Highs in the lower to mid 90s. $$ AZZ545-547-552-561-211100- New River Mesa-Rio Verde/Salt River-Superior-Dripping Springs- Including the cities of Tortilla Flat, Superior, Hayden, and Winkelman 1241 AM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Clear. Lows 61 to 71. Northeast wind 5 to 10 mph. .SATURDAY...Sunny and hot. Highs 99 to 104. East wind 5 to 10 mph in the morning becoming southwest 10 to 15 mph in the afternoon. .SATURDAY NIGHT...Clear in the evening then becoming partly cloudy. Lows 60 to 70. Northwest wind 5 to 10 mph in the evening becoming northeast after midnight. .SUNDAY...Partly sunny and hot. Highs 96 to 101. East wind 5 to 10 mph in the morning becoming southwest 10 to 15 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 58 to 68. Northwest wind 5 to 10 mph in the evening becoming east around 5 mph after midnight. .MONDAY...Sunny. Highs 86 to 98. .MONDAY NIGHT...Clear. Lows 59 to 67. .TUESDAY...Sunny. Highs 87 to 99. .TUESDAY NIGHT...Clear. Lows 60 to 69. .WEDNESDAY...Sunny and hot. Highs 90 to 102. .WEDNESDAY NIGHT...Clear. Lows 61 to 69. .THURSDAY...Sunny and hot. Highs 90 to 102. .THURSDAY NIGHT...Clear. Lows 61 to 69. .FRIDAY...Partly sunny and hot. Highs 90 to 102. $$ AZZ556>558-211100- Tonto Basin-Mazatzal Mountains-Pinal/Superstition Mountains- Including the cities of Punkin Center and Sunflower 1241 AM MST Sat Mar 21 2026 .TONIGHT...Clear. Lows 59 to 69. Northeast wind 5 to 10 mph. .SATURDAY...Sunny. Highs 94 to 99. Southeast wind 5 to 10 mph in the morning becoming west 10 to 15 mph in the afternoon. .SATURDAY NIGHT...Clear in the evening then becoming partly cloudy. 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 east 5 to 10 mph after midnight. .MONDAY...Sunny. Highs 80 to 94. .MONDAY NIGHT...Clear. Lows 56 to 64. .TUESDAY...Sunny. Highs 81 to 95. .TUESDAY NIGHT...Clear. Lows 57 to 65. .WEDNESDAY...Sunny. Highs 83 to 97. .WEDNESDAY NIGHT...Clear. Lows 57 to 65. .THURSDAY...Sunny. Highs 83 to 97. .THURSDAY NIGHT...Clear. Lows 56 to 65. .FRIDAY...Mostly sunny. Highs 83 to 97. $$ AZZ560-563-211100- San Carlos-Southeast Gila County- Including the cities of San Carlos and Peridot 1241 AM MST Sat Mar 21 2026 .TONIGHT...Clear. Lows 56 to 66. East wind 5 to 10 mph. .SATURDAY...Sunny. Highs 88 to 98. Southeast wind around 5 mph in the morning becoming southwest 10 to 15 mph in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 55 to 65. West wind 5 to 10 mph in the evening becoming northeast around 5 mph after midnight. .SUNDAY...Partly sunny. Highs 85 to 95. East wind 5 to 10 mph in the morning becoming southwest 5 to 15 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 53 to 63. Northwest wind 5 to 10 mph in the evening becoming northeast around 5 mph after midnight. .MONDAY...Sunny. Highs 79 to 93. .MONDAY NIGHT...Clear. Lows 42 to 62. .TUESDAY...Sunny. Highs 80 to 94. .TUESDAY NIGHT...Clear. Lows 44 to 63. .WEDNESDAY...Sunny. Highs 83 to 97. .WEDNESDAY NIGHT...Clear. Lows 44 to 63. .THURSDAY...Sunny. Highs 82 to 96. .THURSDAY NIGHT...Clear. Lows 44 to 64. .FRIDAY...Mostly sunny. Highs 81 to 95. $$ AZZ539-559-211100- Gila Bend-Sonoran Desert Natl Monument- Including the cities of Gila Bend, Sentinel, and Kaka 1241 AM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Clear. Lows 65 to 75. Light wind. .SATURDAY...Sunny and hot. Highs 102 to 107. Light wind in the morning becoming west 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 63 to 73. 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 99 to 104. South wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Lows 60 to 70. Southwest wind 5 to 10 mph. .MONDAY...Sunny and hot. Highs 94 to 100. .MONDAY NIGHT...Clear. Lows 60 to 69. .TUESDAY...Sunny and hot. Highs 95 to 101. .TUESDAY NIGHT...Clear. Lows 61 to 70. .WEDNESDAY...Sunny and hot. Highs 98 to 104. .WEDNESDAY NIGHT...Clear. Lows 62 to 71. .THURSDAY...Sunny and hot. Highs 99 to 105. .THURSDAY NIGHT...Clear. Lows 62 to 71. .FRIDAY...Mostly sunny and hot. Highs 98 to 104. $$ AZZ534-538-211100- Aguila Valley-Tonopah Desert- Including the cities of Aguila, Gladden, Wickenburg, Arlington, Hassayampa, Tonopah, and Wintersburg 1241 AM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Clear. Lows 62 to 72. North wind around 5 mph. .SATURDAY...Sunny and hot. Highs 101 to 106. Northeast wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Mostly clear in the evening then becoming partly cloudy. Lows 61 to 71. West wind 5 to 10 mph in the evening becoming north around 5 mph after midnight. .SUNDAY...Partly sunny and hot. Highs 96 to 101. East wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy in the evening then becoming mostly clear. Lows 57 to 67. Southwest wind 5 to 10 mph in the evening becoming northeast around 5 mph after midnight. .MONDAY...Mostly sunny. Highs 92 to 98. .MONDAY NIGHT...Clear. Lows 58 to 66. .TUESDAY...Sunny. Highs 93 to 99. .TUESDAY NIGHT...Clear. Lows 59 to 68. .WEDNESDAY...Sunny and hot. Highs 96 to 102. .WEDNESDAY NIGHT...Clear. Lows 59 to 69. .THURSDAY...Sunny and hot. Highs 96 to 104. .THURSDAY NIGHT...Clear. Lows 60 to 70. .FRIDAY...Partly sunny and hot. Highs 95 to 103. $$ AZZ531-533-211100- Kofa-Central La Paz- Including the cities of Palm Canyon, Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, and Salome 1241 AM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Clear. Lows 66 to 76. Northwest wind around 5 mph. .SATURDAY...Sunny and hot. Highs 101 to 106. North wind around 5 mph in the morning becoming west 5 to 10 mph in the afternoon. .SATURDAY NIGHT...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. Southeast wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy in the evening then becoming clear. Lows 60 to 70. Southwest wind 5 to 10 mph in the evening becoming south around 5 mph after midnight. .MONDAY...Sunny. Highs 91 to 99. .MONDAY NIGHT...Clear. Lows 59 to 67. .TUESDAY...Sunny. Highs 91 to 99. .TUESDAY NIGHT...Clear. Lows 60 to 70. .WEDNESDAY...Sunny and hot. Highs 95 to 101. .WEDNESDAY NIGHT...Clear. Lows 61 to 71. .THURSDAY...Sunny and hot. Highs 95 to 103. .THURSDAY NIGHT...Clear. Lows 61 to 71. .FRIDAY...Mostly sunny and hot. Highs 95 to 103. $$ AZZ535-536-211100- Southeast Yuma County-Gila River Valley- Including the city of Ligurta 1241 AM MST Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST SUNDAY... .TONIGHT...Clear. Lows 63 to 73. Light wind. .SATURDAY...Sunny and hot. Highs 102 to 107. Light wind in the morning becoming west 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Mostly clear. Lows 61 to 71. West wind 5 to 10 mph. .SUNDAY...Mostly sunny and hot. Highs 97 to 102. West wind 5 to 10 mph. .SUNDAY NIGHT...Partly cloudy in the evening then becoming clear. Cooler. Lows 56 to 66. South wind 5 to 10 mph. .MONDAY...Sunny. Highs 90 to 98. .MONDAY NIGHT...Clear. Lows 56 to 64. .TUESDAY...Sunny. Highs 93 to 99. .TUESDAY NIGHT...Clear. Lows 58 to 66. .WEDNESDAY...Sunny and hot. Highs 97 to 103. .WEDNESDAY NIGHT...Clear. Lows 59 to 68. .THURSDAY...Sunny and hot. Highs 99 to 104. .THURSDAY NIGHT...Clear. Lows 59 to 69. .FRIDAY...Mostly sunny and hot. Highs 99 to 103. $$ AZZ530-CAZ569-211100- Parker Valley-Palo Verde Valley- Including the cities of Parker, Ehrenberg, Martinez Lake, Blythe, Palo Verde, and Ripley 1241 AM MST Sat Mar 21 2026 /1241 AM PDT Sat Mar 21 2026/ ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM MST /8 PM PDT/ SUNDAY... .TONIGHT...Clear. Lows 61 to 71. West wind around 5 mph. .SATURDAY...Sunny and hot. Highs 103 to 108. North wind around 5 mph in the morning becoming southwest 5 to 10 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 60 to 70. Southwest wind 5 to 15 mph. .SUNDAY...Partly sunny and hot. Highs 97 to 102. West wind 5 to 10 mph. .SUNDAY NIGHT...Mostly clear. Lows 56 to 66. South wind 5 to 10 mph. .MONDAY...Sunny and hot. Highs 94 to 100. .MONDAY NIGHT...Clear. Lows 58 to 64. .TUESDAY...Sunny and hot. Highs 95 to 101. .TUESDAY NIGHT...Clear. Lows 59 to 66. .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 68. .FRIDAY...Mostly sunny and hot. Highs 99 to 105. $$ CAZ564-565-568-570-211100- Chuckwalla Mountains-Imperial County Southeast-Chiriaco Summit- Chuckwalla Valley- Including the cities of Imperial Hot Mineral Springs, Winterhaven, Chiriaco Summit, and Midland 1241 AM PDT Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TONIGHT...Clear. Lows 66 to 76. Northwest wind 5 to 10 mph. .SATURDAY...Sunny and hot. Highs 102 to 107. Northwest wind 5 to 10 mph in the morning becoming west 10 to 15 mph in the afternoon. .SATURDAY NIGHT...Mostly clear in the evening then becoming partly cloudy. Lows 62 to 72. Northwest wind 5 to 15 mph. .SUNDAY...Partly sunny and hot. Highs 96 to 101. Northwest wind 5 to 10 mph in the morning becoming southwest in the afternoon. .SUNDAY NIGHT...Clear. Lows 60 to 70. Southwest wind 5 to 10 mph. .MONDAY...Sunny. Highs 89 to 99. .MONDAY NIGHT...Clear. Lows 60 to 68. .TUESDAY...Sunny. Highs 89 to 99. .TUESDAY NIGHT...Clear. Lows 60 to 69. .WEDNESDAY...Sunny and hot. Highs 92 to 102. .WEDNESDAY NIGHT...Clear. Lows 62 to 70. .THURSDAY...Sunny and hot. Highs 93 to 103. .THURSDAY NIGHT...Mostly clear. Lows 62 to 70. .FRIDAY...Mostly sunny and hot. Highs 93 to 103. $$ CAZ563-567-211100- Salton Sea-Imperial Valley- Including the cities of Desert Shores, El Centro, Calexico, Alamorio, and Brawley 1241 AM PDT Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TONIGHT...Clear. Lows 65 to 75. West wind 5 to 10 mph. .SATURDAY...Sunny and hot. Highs 104 to 109. West wind 5 to 15 mph. .SATURDAY NIGHT...Mostly clear in the evening then becoming partly cloudy. Lows 63 to 73. West wind 10 to 20 mph in the evening decreasing to 5 to 10 mph after midnight. .SUNDAY...Partly sunny and hot. Highs 98 to 103. West wind 5 to 10 mph. .SUNDAY NIGHT...Clear. Lows 60 to 70. Southwest wind 5 to 10 mph. .MONDAY...Sunny and hot. Highs 93 to 101. .MONDAY NIGHT...Clear. Lows 60 to 69. .TUESDAY...Sunny and hot. Highs 92 to 100. .TUESDAY NIGHT...Clear. Lows 61 to 70. .WEDNESDAY...Sunny and hot. Highs 95 to 105. .WEDNESDAY NIGHT...Clear. Lows 62 to 72. .THURSDAY...Sunny and hot. Highs 96 to 106. .THURSDAY NIGHT...Mostly clear. Lows 62 to 72. .FRIDAY...Partly sunny and hot. Highs 96 to 106. $$ CAZ566-211100- Imperial County West- Including the cities of Coolidge Springs, Salton City, Winona, Coyote Wells, Ocotillo, and Plaster City 1241 AM PDT Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TONIGHT...Clear and cooler. Lows 68 to 78. West wind 5 to 15 mph. .SATURDAY...Sunny and hot. Highs 104 to 109. West wind 5 to 10 mph in the morning increasing to 10 to 20 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy and breezy. Lows 65 to 75. West wind 10 to 20 mph. Gusts up to 30 mph in the evening. .SUNDAY...Partly sunny and hot. Highs 98 to 103. Northwest wind 5 to 10 mph. .SUNDAY NIGHT...Clear. Lows 63 to 73. West wind 5 to 10 mph. .MONDAY...Sunny and hot. Highs 97 to 101. .MONDAY NIGHT...Clear. Lows 61 to 72. .TUESDAY...Sunny and hot. Highs 96 to 100. .TUESDAY NIGHT...Clear. Lows 62 to 73. .WEDNESDAY...Sunny and hot. Highs 99 to 103. .WEDNESDAY NIGHT...Clear. Lows 64 to 74. .THURSDAY...Sunny and hot. Highs 101 to 105. .THURSDAY NIGHT...Mostly clear. Lows 64 to 74. .FRIDAY...Mostly sunny and hot. Highs 101 to 105. $$ CAZ562-211100- Imperial County Southwest- Including the city of Mountain Spring 1241 AM PDT Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TONIGHT...Clear. Not as warm. Lows 73 to 83. West wind 10 to 20 mph. .SATURDAY...Sunny, windy and hot. Highs 103 to 108. West wind 10 to 15 mph in the morning increasing to 15 to 25 mph in the afternoon. Gusts up to 35 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy, windy and cooler. Lows 68 to 78. West wind 15 to 25 mph. Gusts up to 35 mph. .SUNDAY...Partly sunny and hot. Highs 98 to 103. West wind 10 to 20 mph. .SUNDAY NIGHT...Clear. Lows 66 to 76. West wind 5 to 15 mph. .MONDAY...Sunny and hot. Highs 91 to 101. .MONDAY NIGHT...Clear. Lows 65 to 76. .TUESDAY...Sunny. Highs 91 to 99. .TUESDAY NIGHT...Clear. Lows 67 to 77. .WEDNESDAY...Sunny and hot. Highs 93 to 103. .WEDNESDAY NIGHT...Clear. Lows 67 to 78. .THURSDAY...Sunny and hot. Highs 94 to 104. .THURSDAY NIGHT...Mostly clear. Lows 67 to 78. .FRIDAY...Mostly sunny and hot. Highs 94 to 104. $$ CAZ560-211100- Joshua Tree NP West- Including the cities of Cottonwood Visitor and Lost Horse-Keys Village 1241 AM PDT Sat Mar 21 2026 .TONIGHT...Clear. Lows 63 to 73. West wind 5 to 10 mph. .SATURDAY...Sunny and breezy. Highs 84 to 94. West wind 5 to 10 mph in the morning becoming southwest 10 to 20 mph in the afternoon. Gusts up to 30 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy and breezy. Lows 59 to 69. West wind 10 to 20 mph in the evening decreasing to 5 to 10 mph after midnight. Gusts up to 30 mph in the evening. .SUNDAY...Partly sunny. Highs 80 to 90. West wind 5 to 10 mph. .SUNDAY NIGHT...Clear. Lows 58 to 68. West wind 5 to 10 mph. .MONDAY...Sunny. Highs 80 to 90. .MONDAY NIGHT...Clear. Lows 55 to 67. .TUESDAY...Sunny. Highs 80 to 90. .TUESDAY NIGHT...Clear. Lows 56 to 68. .WEDNESDAY...Sunny. Highs 82 to 92. .WEDNESDAY NIGHT...Clear. Lows 56 to 69. .THURSDAY...Sunny. Highs 82 to 92. .THURSDAY NIGHT...Mostly clear. Lows 55 to 68. .FRIDAY...Partly sunny. Highs 82 to 92. $$ CAZ561-211100- Joshua Tree NP East- 1241 AM PDT Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SUNDAY... .TONIGHT...Clear. Lows 63 to 73. West wind 5 to 10 mph. .SATURDAY...Sunny and hot. Highs 92 to 102. West wind 5 to 15 mph. .SATURDAY NIGHT...Partly cloudy. Lows 60 to 70. West wind 5 to 15 mph. .SUNDAY...Partly sunny. Not as warm. Highs 87 to 97. West wind 5 to 10 mph. .SUNDAY NIGHT...Clear. Lows 59 to 69. West wind 5 to 10 mph. .MONDAY...Sunny. Highs 89 to 97. .MONDAY NIGHT...Clear. Lows 63 to 68. .TUESDAY...Sunny. Highs 88 to 96. .TUESDAY NIGHT...Clear. Lows 63 to 69. .WEDNESDAY...Sunny. Highs 91 to 99. .WEDNESDAY NIGHT...Clear. Lows 64 to 69. .THURSDAY...Sunny and hot. Highs 92 to 100. .THURSDAY NIGHT...Mostly clear. Lows 63 to 68. .FRIDAY...Partly sunny. Highs 91 to 99. $$ Visit us on Facebook, Twitter, and at weather.gov/phoenix