FPUS56 KSGX 190817 ZFPSGX Zone Forecast Product for Extreme Southwest California National Weather Service San Diego CA 117 AM PDT Thu Mar 19 2026 CAZ552-192130- Orange County Coastal Areas- Including the cities of Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, and San Clemente 117 AM PDT Thu Mar 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY... .TODAY...Partly cloudy with patchy fog this morning...becoming mostly sunny. Local visibility one quarter mile or less at times this morning. Highs 80 to 85 at the beaches to 86 to 91 farther inland and near higher coastal terrain. Light winds becoming southwest 10 mph this afternoon. .TONIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Local visibility one quarter mile or less at times overnight. Lows around 60. Light winds. .FRIDAY...Partly cloudy with patchy fog in the morning...becoming mostly sunny. Local visibility one quarter mile or less at times in the morning. Highs 79 to 84 at the beaches to 86 to 91 farther inland and near higher coastal terrain. Light winds becoming west 10 mph in the afternoon. .FRIDAY NIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows around 60. Areas of winds west 10 mph in the evening becoming light. .SATURDAY...Patchy fog in the morning. Partly cloudy. Highs 75 to 78 at the beaches to 80 to 85 farther inland and near higher coastal terrain. Light winds becoming west 10 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy in the evening...becoming mostly cloudy overnight with patchy fog. Lows around 58. .SUNDAY...Mostly cloudy with patchy fog in the morning...becoming partly cloudy. Highs 74 to 77 at the beaches to 79 to 83 farther inland and near higher coastal terrain. .SUNDAY NIGHT...Partly cloudy. Patchy fog overnight. Lows around 58. .MONDAY...Partly cloudy with patchy fog in the morning...becoming mostly sunny. Highs around 80 at the beaches to 82 to 86 farther inland and near higher coastal terrain. .MONDAY NIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows around 59. .TUESDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs 79 to 82 at the beaches to 84 to 88 farther inland and near higher coastal terrain. .TUESDAY NIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows around 58. .WEDNESDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs around 79 at the beaches to 83 to 86 farther inland and near higher coastal terrain. $$ CAZ554-192130- Orange County Inland Areas- Including the cities of Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 117 AM PDT Thu Mar 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY... .TODAY...Mostly sunny. Highs 89 to 93 towards the coast to 94 to 97 farther inland. Light winds becoming southwest 10 mph this afternoon. .TONIGHT...Mostly clear. Lows 60 to 66. Light winds. .FRIDAY...Patchy fog in the morning. Mostly sunny. Local visibility one quarter mile or less at times in the morning. Highs 88 to 92 towards the coast to 94 to 97 farther inland. Light winds becoming southwest 10 mph in the afternoon. .FRIDAY NIGHT...Clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 59 to 64. Areas of winds southwest to 10 mph in the evening becoming light. .SATURDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs 81 to 86 towards the coast to 89 farther inland. Light winds becoming southwest 10 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Patchy fog overnight. Lows around 60. .SUNDAY...Mostly cloudy with patchy fog in the morning...becoming partly cloudy. Highs 81 to 84 towards the coast to 84 to 88 farther inland. .SUNDAY NIGHT...Mostly clear. Lows around 60. .MONDAY...Partly cloudy with patchy fog in the morning...becoming mostly sunny. Highs 85 to 88 towards the coast to 88 to 92 farther inland. .MONDAY NIGHT...Mostly clear. Lows 58 to 62. .TUESDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs 86 to 89 towards the coast to 89 to 93 farther inland. .TUESDAY NIGHT...Mostly clear. Patchy fog overnight. Lows around 60. .WEDNESDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs 85 to 88 towards the coast to 88 to 92 farther inland. $$ CAZ043-192130- San Diego County Coastal Areas- Including the cities of Oceanside, Vista, Carlsbad, Encinitas, Chula Vista, National City, and San Diego 117 AM PDT Thu Mar 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY... .TODAY...Partly cloudy with patchy fog this morning...becoming mostly sunny. Local visibility one quarter mile or less at times this morning. Highs 79 to 84 near the coast to 88 to 93 inland. Light winds becoming west 10 mph this afternoon. .TONIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Local visibility one quarter mile or less at times overnight. Lows 57 to 62. Light winds. .FRIDAY...Partly cloudy with patchy fog in the morning...becoming mostly sunny. Local visibility one quarter mile or less at times in the morning. Highs 81 to 86 near the coast to 89 to 94 inland. Light winds becoming west 10 mph in the afternoon. .FRIDAY NIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 56 to 62. Light winds. .SATURDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs 77 to 82 near the coast to 85 to 90 inland. Light winds becoming west 10 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy in the evening...becoming mostly cloudy overnight with patchy fog. Lows 54 to 59. .SUNDAY...Mostly cloudy with patchy fog in the morning...becoming partly cloudy. Highs 76 to 81 near the coast to 83 to 86 inland. .SUNDAY NIGHT...Partly cloudy. Patchy fog overnight. Lows 55 to 59. .MONDAY...Partly cloudy with patchy fog in the morning...becoming mostly sunny. Highs 76 to 81 near the coast to 84 to 87 inland. .MONDAY NIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 55 to 60. .TUESDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs 77 to 82 near the coast to 85 to 88 inland. .TUESDAY NIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 55 to 60. .WEDNESDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs 78 to 83 near the coast to 85 to 88 inland. $$ CAZ050-192130- San Diego County Valleys- Including the cities of Escondido, El Cajon, San Marcos, La Mesa, Santee, and Poway 117 AM PDT Thu Mar 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY... .TODAY...Sunny. Highs 94 to 99. Light winds becoming west 10 mph this afternoon. .TONIGHT...Clear. Lows 60 to 66 in wind sheltered areas to 63 to 71 in warmer locations. Light winds. .FRIDAY...Mostly sunny. Highs 94 to 99. Light winds becoming west 10 mph in the afternoon. .FRIDAY NIGHT...Mostly clear. Lows 59 to 67. Areas of winds northwest to 10 mph in the evening becoming light. .SATURDAY...Mostly sunny. Highs 89 to 94. Areas of winds west to 10 mph...becoming 10 to 15 mph with gusts to 25 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Patchy fog overnight. Lows 56 to 63. .SUNDAY...Patchy fog in the morning. Partly cloudy. Highs 85 to 90. .SUNDAY NIGHT...Partly cloudy in the evening...becoming mostly clear. Lows 56 to 63. .MONDAY...Mostly sunny. Highs 86 to 90 in the western valleys to 88 to 93 near the foothills. .MONDAY NIGHT...Mostly clear. Lows 57 to 64. .TUESDAY...Mostly sunny. Highs 89 to 94. .TUESDAY NIGHT...Mostly clear. Lows 56 to 63. .WEDNESDAY...Mostly sunny. Highs 88 to 93. $$ CAZ048-192130- San Bernardino and Riverside County Valleys-The Inland Empire- Including the cities of Riverside, San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, and Corona 117 AM PDT Thu Mar 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY... .TODAY...Sunny, hot. Highs 97 to 103. Light winds becoming west 10 mph this afternoon. .TONIGHT...Clear. Lows 60 to 64 in wind sheltered areas to 64 to 73 in warmer locations. Areas of winds west to 10 mph in the evening becoming light. .FRIDAY...Sunny, hot. Highs 97 to 103. Light winds becoming west 10 to 15 mph with gusts to 25 mph in the afternoon. .FRIDAY NIGHT...Clear. Lows around 60 in wind sheltered areas to 61 to 69 in warmer locations. Areas of winds west 10 to 15 mph with gusts to 25 mph in the evening becoming light. .SATURDAY...Mostly sunny. Highs 90 to 95. Light winds becoming west 10 to 15 mph with gusts to 30 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 54 to 63. .SUNDAY...Partly cloudy. Highs 88 to 95. .SUNDAY NIGHT...Mostly clear. Lows 55 to 64. .MONDAY...Mostly sunny. Highs 92 to 98. .MONDAY NIGHT...Clear. Lows 56 to 64. .TUESDAY...Sunny. Highs 93 to 99. .TUESDAY NIGHT...Clear. Lows 55 to 63. .WEDNESDAY...Mostly sunny. Highs 91 to 97. $$ CAZ057-192130- Santa Ana Mountains and Foothills- 117 AM PDT Thu Mar 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY... .TODAY...Sunny. Highs 89 to 97. Light winds becoming west 10 mph this afternoon. .TONIGHT...Clear. Lows 62 to 72. Light winds. .FRIDAY...Sunny. Highs 88 to 96. Light winds becoming west 10 to 15 mph in the afternoon. .FRIDAY NIGHT...Clear. Lows 58 to 68. Areas of winds northwest 10 mph in the evening becoming light. .SATURDAY...Mostly sunny. Highs 83 to 91. Areas of winds west to 10 mph...becoming 10 to 15 mph with gusts to 25 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 53 to 63. .SUNDAY...Partly cloudy. Highs 79 to 86. .SUNDAY NIGHT...Mostly clear. Lows 54 to 64. .MONDAY...Mostly sunny. Highs 82 to 90. .MONDAY NIGHT...Mostly clear. Lows 55 to 65. .TUESDAY...Mostly sunny. Highs 83 to 91. .TUESDAY NIGHT...Mostly clear. Lows 54 to 64. .WEDNESDAY...Mostly sunny. Highs 82 to 90. $$ CAZ055-192130- San Bernardino County Mountains- Including the cities of Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, and Wrightwood 117 AM PDT Thu Mar 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY... .TODAY...Sunny, warmer. Highs 75 to 85 above 6000 feet to 84 to 93 below 6000 feet. Light winds becoming east 10 mph this afternoon. .TONIGHT...Clear. Lows 47 to 57 above 6000 feet to 57 to 66 below 6000 feet. Light winds becoming south 10 mph overnight. .FRIDAY...Sunny. Highs 75 to 85 above 6000 feet to 83 to 92 below 6000 feet. Areas of winds south 10 to 15 mph. Gusts to 25 mph in the afternoon. .FRIDAY NIGHT...Clear. Lows 45 to 55 above 6000 feet to 54 to 64 below 6000 feet. Areas of winds south 10 to 15 mph. Gusts to 25 mph...becoming 30 mph overnight. .SATURDAY...Mostly sunny. Highs 69 to 79 above 6000 feet to 77 to 87 below 6000 feet. Areas of winds south 10 to 20 mph. Gusts to 25 mph...becoming 35 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 46 to 56. .SUNDAY...Partly cloudy. Highs 67 to 77 above 6000 feet to 76 to 86 below 6000 feet. .SUNDAY NIGHT...Partly cloudy in the evening...becoming clear. Lows 47 to 57. .MONDAY...Mostly sunny. Highs 70 to 80 above 6000 feet to 79 to 88 below 6000 feet. .MONDAY NIGHT...Mostly clear. Lows 47 to 57. .TUESDAY...Sunny. Highs 71 to 81 above 6000 feet to 80 to 88 below 6000 feet. .TUESDAY NIGHT...Clear. Lows 46 to 56. .WEDNESDAY...Mostly sunny. Highs 70 to 80 above 6000 feet to 78 to 87 below 6000 feet. $$ CAZ056-192130- Riverside County Mountains- Including the city of Idyllwild-Pine Cove 117 AM PDT Thu Mar 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY... .TODAY...Sunny, warmer. Highs 86 to 96. Areas of winds east to 10 mph. .TONIGHT...Clear. Lows 57 to 67. Light winds. .FRIDAY...Sunny. Highs 85 to 95. Light winds becoming west 10 to 15 mph with gusts to 25 mph in the afternoon. .FRIDAY NIGHT...Clear. Lows 56 to 66. Areas of winds west 10 to 15 mph. Gusts to 25 mph...becoming 30 mph overnight. .SATURDAY...Sunny. Highs 81 to 91. Areas of winds west 10 to 15 mph with gusts to 30 mph...becoming 15 to 25 mph with gusts to 35 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Breezy. Lows 52 to 62. .SUNDAY...Partly cloudy. Highs 79 to 89. .SUNDAY NIGHT...Partly cloudy in the evening...becoming clear. Lows 53 to 63. .MONDAY...Mostly sunny. Highs 81 to 91. .MONDAY NIGHT...Clear. Lows 53 to 63. .TUESDAY...Sunny. Highs 81 to 91. .TUESDAY NIGHT...Mostly clear. Lows 52 to 62. .WEDNESDAY...Mostly sunny. Highs 81 to 91. $$ CAZ058-192130- San Diego County Mountains- Including the cities of Julian and Pine Valley 117 AM PDT Thu Mar 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY... .TODAY...Sunny, warmer. Highs 87 to 96. Areas of winds east to 10 mph. .TONIGHT...Clear. Lows 59 to 68. Areas of winds north 10 mph. .FRIDAY...Sunny. Highs 87 to 95. Light winds becoming west 10 to 15 mph in the afternoon. .FRIDAY NIGHT...Clear. Lows 57 to 66. Areas of winds west 10 to 15 mph. Gusts to 25 mph...becoming 30 mph overnight. .SATURDAY...Mostly sunny. Highs 81 to 90. Areas of winds west 10 to 20 mph. Gusts to 25 mph...becoming 35 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 53 to 61. .SUNDAY...Partly cloudy. Highs 78 to 86. .SUNDAY NIGHT...Partly cloudy in the evening...becoming mostly clear. Lows 54 to 63. .MONDAY...Mostly sunny. Highs 82 to 89. .MONDAY NIGHT...Mostly clear. Lows 54 to 62. .TUESDAY...Sunny. Highs 82 to 90. .TUESDAY NIGHT...Mostly clear. Lows 53 to 62. .WEDNESDAY...Mostly sunny. Highs 81 to 89. $$ CAZ060-192130- Apple and Lucerne Valleys- Including the cities of Victorville, Hesperia, Apple Valley, and Lucerne Valley 117 AM PDT Thu Mar 19 2026 .TODAY...Sunny. Highs 94 to 99. Areas of winds west to 10 mph this morning becoming light. .TONIGHT...Clear. Lows 57 to 65. Areas of winds south 10 mph becoming west overnight. .FRIDAY...Sunny, hot. Highs 95 to 101. Light winds becoming southwest 10 to 15 mph with gusts to 25 mph in the afternoon. .FRIDAY NIGHT...Clear. Lows 55 to 64. Areas of winds south 10 to 15 mph with gusts to 25 mph. .SATURDAY...Mostly sunny. Highs 90 to 98. Areas of winds west 10 to 20 mph. Gusts to 35 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 54 to 62. .SUNDAY...Partly cloudy. Highs 87 to 93. .SUNDAY NIGHT...Mostly clear. Lows 52 to 61. .MONDAY...Sunny. Highs 90 to 96. .MONDAY NIGHT...Mostly clear. Lows 53 to 62. .TUESDAY...Sunny. Highs 90 to 96. .TUESDAY NIGHT...Clear. Lows 53 to 62. .WEDNESDAY...Mostly sunny. Highs 89 to 96. $$ CAZ065-192130- San Gorgonio Pass near Banning- 117 AM PDT Thu Mar 19 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SATURDAY... .TODAY...Sunny, hot. Highs 100 to 103 through the pass to 103 to 107 in the northern Coachella Valley. Areas of winds northeast 10 mph becoming southeast this afternoon. .TONIGHT...Clear. Lows 69 to 72 through the pass to 80 in the northern Coachella Valley. Areas of winds north 10 mph. .FRIDAY...Sunny, hot. Highs 101 to 104 through the pass to 104 to 109 in the northern Coachella Valley. Areas of winds east 10 mph becoming south with gusts to 30 mph in the afternoon. .FRIDAY NIGHT...Clear. Lows around 70 through the pass to 76 to 79 in the northern Coachella Valley. Areas of winds west 10 to 15 mph with gusts to 25 mph. .SATURDAY...Mostly sunny. Hot. Highs around 96 through the pass to 101 to 106 in the northern Coachella Valley. Areas of winds west 15 to 25 mph. Gusts to 30 mph...becoming 40 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Breezy, cooler. Lows 64 to 74. .SUNDAY...Partly cloudy. Hot. Highs 93 to 96 through the pass to 99 to 103 in the northern Coachella Valley. .SUNDAY NIGHT...Partly cloudy in the evening...becoming clear. Lows 66 to 76. .MONDAY...Sunny, hot. Highs 95 to 98 through the pass to 99 to 103 in the northern Coachella Valley. .MONDAY NIGHT...Clear. Lows 65 to 75. .TUESDAY...Sunny, hot. Highs around 97 through the pass to 99 to 103 in the northern Coachella Valley. .TUESDAY NIGHT...Clear. Lows 65 to 75. .WEDNESDAY...Mostly sunny. Hot. Highs around 96 through the pass to 100 to 104 in the northern Coachella Valley. $$ CAZ061-192130- Coachella Valley- Including the cities of Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, and Coachella 117 AM PDT Thu Mar 19 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SATURDAY... .TODAY...Sunny, hot. Highs 106 to 109. Light winds becoming southeast 10 mph this afternoon. .TONIGHT...Clear. Lows 72 to 78. Light winds. .FRIDAY...Sunny. Very hot. Highs 106 to 110. Light winds becoming southeast 10 mph in the afternoon. .FRIDAY NIGHT...Clear. Lows 71 to 77. Areas of winds west 10 mph becoming north overnight. .SATURDAY...Mostly sunny. Very hot. Highs 105 to 110. Areas of winds north 10 to 15 mph. Gusts to 25 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 67 to 72. .SUNDAY...Partly cloudy. Hot. Highs 101 to 105. .SUNDAY NIGHT...Partly cloudy in the evening...becoming mostly clear. Lows 67 to 73. .MONDAY...Mostly sunny. Hot. Highs 101 to 104. .MONDAY NIGHT...Mostly clear. Lows 65 to 72. .TUESDAY...Sunny, hot. Highs 101 to 104. .TUESDAY NIGHT...Mostly clear. Lows 67 to 73. .WEDNESDAY...Mostly sunny. Hot. Highs 102 to 105. $$ CAZ062-192130- San Diego County Deserts- Including the city of Borrego Springs 117 AM PDT Thu Mar 19 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT SATURDAY... .TODAY...Sunny, hot. Highs 105 to 109. Areas of winds east to 10 mph. .TONIGHT...Clear. Lows 70 to 79. Areas of winds west 10 mph. .FRIDAY...Sunny. Very hot. Highs 105 to 110. Light winds. .FRIDAY NIGHT...Clear. Lows 69 to 78. Areas of winds west 10 to 15 mph with gusts to 25 mph. .SATURDAY...Mostly sunny. Hot. Highs 104 to 108. Areas of winds west 10 to 20 mph. Gusts to 25 mph...becoming 30 mph in the afternoon. .SATURDAY NIGHT...Partly cloudy. Lows 64 to 74. .SUNDAY...Partly cloudy. Hot. Highs 99 to 104. .SUNDAY NIGHT...Partly cloudy in the evening...becoming mostly clear. Lows 65 to 75. .MONDAY...Mostly sunny. Hot. Highs 99 to 103. .MONDAY NIGHT...Mostly clear. Lows 62 to 72. .TUESDAY...Sunny, hot. Highs 99 to 103. .TUESDAY NIGHT...Clear. Lows 64 to 74. .WEDNESDAY...Mostly sunny. Hot. Highs 101 to 105. $$ 17