FPUS56 KSGX 211809 ZFPSGX Zone Forecast Product for Extreme Southwest California National Weather Service San Diego CA 1109 AM PDT Sat Mar 21 2026 CAZ552-221000- Orange County Coastal Areas- Including the cities of Huntington Beach, Costa Mesa, Newport Beach, Laguna Beach, and San Clemente 1109 AM PDT Sat Mar 21 2026 .TONIGHT...Partly cloudy. Patchy fog. Lows around 57. Areas of winds west to 10 mph this evening becoming light. .SUNDAY...Partly cloudy with patchy fog in the morning...becoming mostly sunny. Highs around 73 at the beaches to 77 to 81 farther inland and near higher coastal terrain. Light winds becoming southwest 10 mph in the afternoon. .SUNDAY NIGHT...Mostly clear in the evening...becoming partly cloudy. Patchy fog. Lows around 57. Light winds. .MONDAY...Mostly cloudy with patchy fog in the morning...becoming partly cloudy. Highs around 75 at the beaches to 78 to 83 farther inland and near higher coastal terrain. Light winds becoming southwest 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows around 58. Areas of winds south 10 mph. .TUESDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs around 76 at the beaches to 79 to 83 farther inland and near higher coastal terrain. .TUESDAY NIGHT...Mostly clear in the evening...becoming partly cloudy. Lows around 60. .WEDNESDAY...Partly cloudy in the morning...becoming mostly sunny. Highs around 77 at the beaches to 80 to 84 farther inland and near higher coastal terrain. .WEDNESDAY NIGHT...Mostly clear in the evening...becoming partly cloudy. Lows around 58. .THURSDAY...Partly cloudy in the morning...becoming mostly sunny. Highs 76 to 79 at the beaches to 81 to 84 farther inland and near higher coastal terrain. .THURSDAY NIGHT...Partly cloudy. Lows around 58. .FRIDAY...Partly cloudy. Highs around 80 at the beaches to 82 to 86 farther inland and near higher coastal terrain. .FRIDAY NIGHT...Partly cloudy. Lows around 59. .SATURDAY...Partly cloudy. Highs 76 to 79 at the beaches to 80 to 84 farther inland and near higher coastal terrain. $$ CAZ554-221000- Orange County Inland Areas- Including the cities of Santa Ana, Anaheim, Garden Grove, Irvine, Orange, Fullerton, and Mission Viejo 1109 AM PDT Sat Mar 21 2026 .TONIGHT...Partly cloudy. Patchy fog overnight. Lows 56 to 60. Areas of winds southwest to 10 mph this evening becoming light. .SUNDAY...Partly cloudy with patchy fog in the morning...becoming mostly sunny. Highs 79 to 82 towards the coast to 82 to 86 farther inland. Light winds becoming southwest 10 mph in the afternoon. .SUNDAY NIGHT...Mostly clear. Patchy fog overnight. Lows 56 to 59. Areas of winds south to 10 mph in the evening becoming light. .MONDAY...Partly cloudy with patchy fog in the morning...becoming mostly sunny. Highs 80 to 83 towards the coast to 84 to 88 farther inland. Light winds becoming southwest 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Patchy fog overnight. Lows around 60. Areas of winds south to 10 mph in the evening becoming light. .TUESDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs 81 to 84 towards the coast to 85 to 89 farther inland. .TUESDAY NIGHT...Mostly clear. Lows around 60. .WEDNESDAY...Partly cloudy in the morning...becoming sunny. Highs 83 to 86 towards the coast to 86 to 90 farther inland. .WEDNESDAY NIGHT...Mostly clear. Lows around 60. .THURSDAY...Partly cloudy in the morning...becoming mostly sunny. Highs around 84 towards the coast to 86 to 89 farther inland. .THURSDAY NIGHT...Partly cloudy. Lows around 60. .FRIDAY...Partly cloudy. Highs around 86 towards the coast to 87 to 92 farther inland. .FRIDAY NIGHT...Partly cloudy. Lows 58 to 62. .SATURDAY...Partly cloudy. Highs 83 to 86 towards the coast to 86 to 91 farther inland. $$ CAZ043-221000- San Diego County Coastal Areas- Including the cities of Oceanside, Vista, Carlsbad, Encinitas, Chula Vista, National City, and San Diego 1109 AM PDT Sat Mar 21 2026 .TONIGHT...Partly cloudy. Patchy fog. Lows 53 to 58. Light winds. .SUNDAY...Partly cloudy. Highs 73 to 78 near the coast to 79 to 84 inland. Light winds becoming west 10 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy. Patchy fog. Lows 53 to 58. Light winds. .MONDAY...Partly cloudy with patchy fog in the morning...becoming mostly sunny. Highs 72 to 76 near the coast to 79 to 84 inland. Light winds becoming west 10 mph in the afternoon. .MONDAY NIGHT...Partly cloudy. Patchy fog. Lows 54 to 59. Light winds. .TUESDAY...Partly cloudy with patchy fog in the morning... becoming mostly sunny. Highs 74 to 78 near the coast to 81 to 84 inland. .TUESDAY NIGHT...Mostly clear. Lows 55 to 60. .WEDNESDAY...Partly cloudy in the morning...becoming mostly sunny. Highs 76 to 81 near the coast to 83 to 86 inland. .WEDNESDAY NIGHT...Mostly clear in the evening...becoming partly cloudy. Lows 55 to 60. .THURSDAY...Partly cloudy in the morning...becoming mostly sunny. Highs 76 to 81 near the coast to 83 to 86 inland. .THURSDAY NIGHT...Mostly clear in the evening...becoming partly cloudy. Lows 55 to 60. .FRIDAY...Partly cloudy. Highs 76 to 81 near the coast to 83 to 86 inland. .FRIDAY NIGHT...Partly cloudy in the evening...becoming mostly cloudy. Lows 56 to 61. .SATURDAY...Mostly cloudy in the morning...becoming partly cloudy. Highs 75 to 80 near the coast to 83 to 86 inland. $$ CAZ050-221000- San Diego County Valleys- Including the cities of Escondido, El Cajon, San Marcos, La Mesa, Santee, and Poway 1109 AM PDT Sat Mar 21 2026 .TONIGHT...Partly cloudy. Lows 51 to 58 in wind sheltered areas to 55 to 62 in warmer locations. Areas of winds west to 10 mph this evening becoming light. .SUNDAY...Partly cloudy. Highs 82 to 87. Light winds becoming west 10 mph in the afternoon. .SUNDAY NIGHT...Mostly clear. Lows 49 to 58 in wind sheltered areas to 56 to 62 in warmer locations. Light winds. .MONDAY...Mostly sunny. Highs 81 to 86 in the western valleys to 84 to 89 near the foothills. Light winds becoming west 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows 52 to 59 in wind sheltered areas to 57 to 63 in warmer locations. Areas of winds southwest to 10 mph in the evening becoming light. .TUESDAY...Mostly sunny. Highs 83 to 86 in the western valleys to 86 to 91 near the foothills. .TUESDAY NIGHT...Mostly clear. Lows 57 to 63. .WEDNESDAY...Mostly sunny. Highs 87 to 92. .WEDNESDAY NIGHT...Mostly clear. Lows 56 to 62. .THURSDAY...Mostly sunny. Highs 86 to 91. .THURSDAY NIGHT...Mostly clear. Lows 56 to 63. .FRIDAY...Partly cloudy. Highs 87 to 92. .FRIDAY NIGHT...Partly cloudy. Lows 57 to 65. .SATURDAY...Partly cloudy. Highs 85 to 88 in the western valleys to 86 to 91 near the foothills. $$ CAZ048-221000- San Bernardino and Riverside County Valleys-The Inland Empire- Including the cities of Riverside, San Bernardino, Ontario, Moreno Valley, Fontana, Rancho Cucamonga, and Corona 1109 AM PDT Sat Mar 21 2026 .TONIGHT...Partly cloudy. Lows 52 to 56 in wind sheltered areas to 56 to 64 in warmer locations. Areas of winds west 10 to 15 mph with gusts to 25 mph this evening becoming light. .SUNDAY...Partly cloudy. Highs 84 to 90. Light winds becoming southwest 10 to 15 mph in the afternoon. .SUNDAY NIGHT...Mostly clear. Lows 53 to 57 in wind sheltered areas to 56 to 64 in warmer locations. Areas of winds west to 10 mph in the evening becoming light. .MONDAY...Mostly sunny. Highs 88 to 93. Light winds becoming west 10 to 15 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows 54 to 59 in wind sheltered areas to 58 to 67 in warmer locations. Areas of winds west to 10 mph in the evening becoming light. .TUESDAY...Sunny. Highs 89 to 95. .TUESDAY NIGHT...Clear. Lows 56 to 63. .WEDNESDAY...Sunny. Highs 90 to 96. .WEDNESDAY NIGHT...Clear. Lows 54 to 62. .THURSDAY...Mostly sunny. Highs 89 to 94. .THURSDAY NIGHT...Mostly clear. Lows 55 to 63. .FRIDAY...Partly cloudy. Highs 90 to 96. .FRIDAY NIGHT...Partly cloudy. Lows 56 to 64. .SATURDAY...Partly cloudy. Highs 90 to 96. $$ CAZ057-221000- Santa Ana Mountains and Foothills- 1109 AM PDT Sat Mar 21 2026 .TONIGHT...Partly cloudy. Cooler. Lows 53 to 63. Areas of winds west 10 to 15 mph this evening becoming light. .SUNDAY...Partly cloudy. Highs 77 to 84. Light winds becoming southwest 10 mph in the afternoon. .SUNDAY NIGHT...Mostly clear. Lows 52 to 62. Areas of winds southwest to 10 mph in the evening becoming light. .MONDAY...Mostly sunny. Highs 79 to 87. Light winds becoming west 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows 54 to 64. Areas of winds southwest to 10 mph in the evening becoming light. .TUESDAY...Sunny. Highs 80 to 88. .TUESDAY NIGHT...Clear. Lows 54 to 64. .WEDNESDAY...Sunny. Highs 81 to 89. .WEDNESDAY NIGHT...Clear. Lows 53 to 63. .THURSDAY...Mostly sunny. Highs 80 to 88. .THURSDAY NIGHT...Mostly clear. Lows 54 to 64. .FRIDAY...Partly cloudy. Highs 82 to 90. .FRIDAY NIGHT...Partly cloudy. Lows 54 to 64. .SATURDAY...Partly cloudy. Highs 81 to 88. $$ CAZ055-221000- San Bernardino County Mountains- Including the cities of Crestline, Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs, and Wrightwood 1109 AM PDT Sat Mar 21 2026 .TONIGHT...Partly cloudy. Colder. Lows 40 to 50 above 6000 feet to 50 to 60 below 6000 feet. Areas of winds west 10 to 15 mph. Gusts to 30 mph this evening. .SUNDAY...Partly cloudy. Highs 66 to 74 above 6000 feet to 73 to 82 below 6000 feet. Areas of winds northwest 10 mph. .SUNDAY NIGHT...Mostly clear. Lows 42 to 52 above 6000 feet to 52 to 60 below 6000 feet. Areas of winds west 10 mph. .MONDAY...Mostly sunny. Highs 69 to 78 above 6000 feet to 76 to 84 below 6000 feet. Areas of winds west 10 to 15 mph. Gusts to 30 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows 43 to 53 above 6000 feet to 53 to 61 below 6000 feet. Areas of winds west 10 to 15 mph. Gusts to 25 mph in the evening. .TUESDAY...Sunny. Highs 69 to 78 above 6000 feet to 77 to 85 below 6000 feet. .TUESDAY NIGHT...Clear. Lows 47 to 57. .WEDNESDAY...Sunny. Highs 70 to 79 above 6000 feet to 78 to 86 below 6000 feet. .WEDNESDAY NIGHT...Clear. Lows 45 to 55. .THURSDAY...Mostly sunny. Highs 69 to 78 above 6000 feet to 76 to 85 below 6000 feet. .THURSDAY NIGHT...Partly cloudy in the evening...becoming mostly clear. Lows 46 to 56. .FRIDAY...Mostly sunny in the morning...becoming partly cloudy. Highs 69 to 77 above 6000 feet to 77 to 85 below 6000 feet. .FRIDAY NIGHT...Partly cloudy. Lows 46 to 56. .SATURDAY...Partly cloudy. Highs 68 to 78 above 6000 feet to 76 to 85 below 6000 feet. $$ CAZ056-221000- Riverside County Mountains- Including the city of Idyllwild-Pine Cove 1109 AM PDT Sat Mar 21 2026 .TONIGHT...Partly cloudy. Cooler. Lows 50 to 60. Areas of winds northwest 10 to 20 mph. Gusts to 35 mph...becoming 30 mph overnight. .SUNDAY...Partly cloudy. Highs 76 to 86. Areas of winds west 10 to 15 mph. Gusts to 30 mph...becoming 25 mph in the afternoon. .SUNDAY NIGHT...Mostly clear. Lows 51 to 61. Areas of winds west 10 to 15 mph. Gusts to 25 mph in the evening. .MONDAY...Sunny. Highs 78 to 88. Areas of winds west 10 mph. .MONDAY NIGHT...Mostly clear. Lows 51 to 61. Areas of winds west to 10 mph. .TUESDAY...Sunny. Highs 78 to 88. .TUESDAY NIGHT...Clear. Lows 52 to 62. .WEDNESDAY...Sunny. Highs 80 to 90. .WEDNESDAY NIGHT...Clear. Lows 50 to 60. .THURSDAY...Mostly sunny. Highs 79 to 89. .THURSDAY NIGHT...Mostly clear. Lows 52 to 62. .FRIDAY...Partly cloudy. Highs 79 to 89. .FRIDAY NIGHT...Partly cloudy. Lows 52 to 62. .SATURDAY...Partly cloudy. Highs 79 to 89. $$ CAZ058-221000- San Diego County Mountains- Including the cities of Julian and Pine Valley 1109 AM PDT Sat Mar 21 2026 .TONIGHT...Partly cloudy. Cooler. Lows 50 to 60. Areas of winds west 10 to 20 mph. Gusts to 35 mph...becoming 30 mph overnight. .SUNDAY...Partly cloudy. Highs 75 to 84. Areas of winds west 10 to 15 mph. Gusts to 30 mph...becoming 25 mph in the afternoon. .SUNDAY NIGHT...Mostly clear. Lows 51 to 60. Areas of winds west 10 to 15 mph. Gusts to 30 mph...becoming 25 mph overnight. .MONDAY...Sunny. Highs 79 to 87. Areas of winds west to 10 mph. .MONDAY NIGHT...Mostly clear. Lows 53 to 61. Areas of winds west to 10 mph. .TUESDAY...Sunny. Highs 79 to 87. .TUESDAY NIGHT...Clear. Lows 53 to 62. .WEDNESDAY...Sunny. Highs 81 to 89. .WEDNESDAY NIGHT...Mostly clear. Lows 51 to 61. .THURSDAY...Mostly sunny. Highs 80 to 88. .THURSDAY NIGHT...Mostly clear. Lows 53 to 61. .FRIDAY...Partly cloudy. Highs 80 to 88. .FRIDAY NIGHT...Partly cloudy. Lows 54 to 63. .SATURDAY...Partly cloudy. Highs 80 to 88. $$ CAZ060-221000- Apple and Lucerne Valleys- Including the cities of Victorville, Hesperia, Apple Valley, and Lucerne Valley 1109 AM PDT Sat Mar 21 2026 .TONIGHT...Partly cloudy. Lows 54 to 61. Areas of winds west 10 to 20 mph with gusts to 30 mph. .SUNDAY...Mostly cloudy in the morning...becoming partly cloudy. Highs 86 to 92. Areas of winds west 10 to 15 mph. Gusts to 25 mph in the morning. .SUNDAY NIGHT...Mostly clear. Lows 53 to 61. Areas of winds west 10 to 15 mph. Gusts to 30 mph...becoming 25 mph overnight. .MONDAY...Mostly sunny. Highs 88 to 95. Areas of winds west 10 to 20 mph. Gusts to 25 mph...becoming 30 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows 53 to 61. Areas of winds west 10 to 20 mph. Gusts to 30 mph...becoming 25 mph overnight. .TUESDAY...Sunny. Highs 89 to 94. .TUESDAY NIGHT...Clear. Lows 52 to 62. .WEDNESDAY...Sunny. Highs 89 to 96. .WEDNESDAY NIGHT...Clear. Lows 51 to 59. .THURSDAY...Mostly sunny. Highs 87 to 95. .THURSDAY NIGHT...Partly cloudy in the evening...becoming mostly clear. Lows 52 to 60. .FRIDAY...Partly cloudy. Highs 87 to 94. .FRIDAY NIGHT...Partly cloudy. Lows 53 to 61. .SATURDAY...Partly cloudy. Highs 88 to 95. $$ CAZ065-221000- San Gorgonio Pass near Banning- 1109 AM PDT Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT THIS EVENING... .TONIGHT...Partly cloudy. Cooler. Lows 62 to 65 through the pass to 71 to 75 in the northern Coachella Valley. Areas of winds west 15 to 25 mph. Gusts to 40 mph...becoming 30 mph overnight. .SUNDAY...Partly cloudy. Highs 89 to 92 through the pass to 96 to 100 in the northern Coachella Valley. Areas of winds west 10 to 20 mph. Gusts to 30 mph...becoming 35 mph in the afternoon. .SUNDAY NIGHT...Partly cloudy in the evening...becoming mostly clear. Lows 62 to 66 through the pass to 71 to 75 in the northern Coachella Valley. Areas of winds west 10 to 20 mph. Gusts to 35 mph...becoming 30 mph overnight. .MONDAY...Sunny, hot. Highs 93 to 96 through the pass to 97 to 101 in the northern Coachella Valley. Areas of winds west 10 to 15 mph with gusts to 25 mph becoming south with gusts to 30 mph in the afternoon. .MONDAY NIGHT...Clear. Lows 63 to 67 through the pass to 71 to 75 in the northern Coachella Valley. Areas of winds west 10 to 15 mph with gusts to 30 mph in the evening becoming light. .TUESDAY...Sunny. Highs 95 to 99. .TUESDAY NIGHT...Clear. Lows 65 to 75. .WEDNESDAY...Sunny, hot. Highs around 96 through the pass to 99 to 102 in the northern Coachella Valley. .WEDNESDAY NIGHT...Clear. Lows 63 to 73. .THURSDAY...Mostly sunny. Hot. Highs around 94 through the pass to 99 to 103 in the northern Coachella Valley. .THURSDAY NIGHT...Mostly clear. Lows 64 to 74. .FRIDAY...Partly cloudy. Hot. Highs around 95 through the pass to 99 to 103 in the northern Coachella Valley. .FRIDAY NIGHT...Partly cloudy. Lows 65 to 75. .SATURDAY...Partly cloudy. Hot. Highs 93 to 96 through the pass to 98 to 102 in the northern Coachella Valley. $$ CAZ061-221000- Coachella Valley- Including the cities of Indio, Palm Springs, Cathedral City, Palm Desert, Palm Desert Country, La Quinta, and Coachella 1109 AM PDT Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT THIS EVENING... .TONIGHT...Partly cloudy. Lows 66 to 73. Areas of winds northwest 10 to 15 mph. Gusts to 30 mph...becoming 25 mph overnight. .SUNDAY...Partly cloudy. Hot. Highs 99 to 102. Areas of winds northwest 10 mph becoming southeast in the afternoon. .SUNDAY NIGHT...Partly cloudy in the evening...becoming mostly clear. Lows 65 to 71. Areas of winds northwest 10 to 15 mph with gusts to 25 mph...becoming to 10 mph overnight. .MONDAY...Sunny, hot. Highs around 100. Light winds becoming southeast 10 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Lows 64 to 71. Areas of winds south to 10 mph in the evening becoming light. .TUESDAY...Sunny, hot. Highs around 100. .TUESDAY NIGHT...Clear. Lows 65 to 72. .WEDNESDAY...Sunny, hot. Highs 100 to 103. .WEDNESDAY NIGHT...Mostly clear. Lows 66 to 71. .THURSDAY...Mostly sunny. Hot. Highs 100 to 103. .THURSDAY NIGHT...Mostly clear. Lows 67 to 72. .FRIDAY...Partly cloudy. Hot. Highs 100 to 103. .FRIDAY NIGHT...Partly cloudy. Lows 68 to 73. .SATURDAY...Partly cloudy. Hot. Highs 100 to 104. $$ CAZ062-221000- San Diego County Deserts- Including the city of Borrego Springs 1109 AM PDT Sat Mar 21 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT THIS EVENING... .TONIGHT...Partly cloudy. Cooler. Lows 64 to 74. Areas of winds west 10 to 20 mph. Gusts to 35 mph...becoming 30 mph overnight. .SUNDAY...Partly cloudy. Hot. Highs 97 to 102. Areas of winds west 10 to 15 mph with gusts to 30 mph. .SUNDAY NIGHT...Partly cloudy in the evening...becoming mostly clear. Lows 63 to 72. Areas of winds west 10 to 20 mph. Gusts to 30 mph...becoming 25 mph overnight. .MONDAY...Sunny, hot. Highs around 100. Areas of winds southeast to 10 mph. .MONDAY NIGHT...Partly cloudy in the evening...becoming clear. Lows 62 to 71. Areas of winds west to 10 mph in the evening becoming light. .TUESDAY...Sunny. Highs 96 to 99. .TUESDAY NIGHT...Clear. Lows 63 to 73. .WEDNESDAY...Sunny, hot. Highs 99 to 102. .WEDNESDAY NIGHT...Mostly clear. Lows 63 to 73. .THURSDAY...Mostly sunny. Hot. Highs 99 to 104. .THURSDAY NIGHT...Mostly clear. Lows 64 to 74. .FRIDAY...Partly cloudy. Hot. Highs 98 to 103. .FRIDAY NIGHT...Partly cloudy. Lows 65 to 75. .SATURDAY...Partly cloudy. Hot. Highs 98 to 103. $$