340
FPUS56 KSGX 181858
ZFPSGX

Zone Forecast Product for Extreme Southwest California
National Weather Service San Diego CA
1158 AM PDT Fri Sep 18 2026

CAZ552-191000-
Orange County Coastal Areas-
Including the cities of Huntington Beach, Costa Mesa,
Newport Beach, Laguna Beach, and San Clemente
1158 AM PDT Fri Sep 18 2026

.TONIGHT...Mostly clear this evening...becoming partly cloudy.
Lows 60 to 65. Areas of winds west to 10 mph this evening
becoming light.
.SATURDAY...Partly cloudy in the morning...becoming mostly sunny.
Highs around 75 at the beaches to 77 to 81 farther inland and
near higher coastal terrain. Light winds becoming southwest
10 mph in the afternoon.
.SATURDAY NIGHT...Mostly clear in the evening...becoming mostly
cloudy. Lows 62 to 66. Areas of winds southwest to 10 mph in the
evening becoming light.
.SUNDAY...Cloudy in the morning...becoming partly cloudy. Highs
around 74 at the beaches to 75 to 79 farther inland and near
higher coastal terrain. Light winds becoming southwest 10 mph in
the afternoon.
.SUNDAY NIGHT...Partly cloudy in the evening...becoming mostly
cloudy. Lows 62 to 66. Areas of winds southwest 10 mph in the
evening becoming light.
.MONDAY...Mostly cloudy in the morning...becoming partly cloudy.
Highs 72 to 77.
.MONDAY NIGHT...Mostly clear in the evening...becoming partly
cloudy. Lows 61 to 66.
.TUESDAY...Partly cloudy. Highs 73 to 78.
.TUESDAY NIGHT...Mostly clear. Lows 63 to 66.
.WEDNESDAY...Partly cloudy in the morning...becoming mostly
sunny. Highs 76 to 79 at the beaches to 80 to 85 farther inland
and near higher coastal terrain.
.WEDNESDAY NIGHT...Mostly clear in the evening...becoming partly
cloudy. Lows 64 to 68.
.THURSDAY...Partly cloudy. Highs 77 to 81 at the beaches to 82 to
86 farther inland and near higher coastal terrain.
.THURSDAY NIGHT...Mostly clear in the evening...becoming partly
cloudy. Lows 66 to 69.
.FRIDAY...Partly cloudy. Highs 78 to 82 at the beaches to 83 to
87 farther inland and near higher coastal terrain.

$$

CAZ554-191000-
Orange County Inland Areas-
Including the cities of Santa Ana, Anaheim, Garden Grove, Irvine,
Orange, Fullerton, and Mission Viejo
1158 AM PDT Fri Sep 18 2026

.TONIGHT...Mostly clear this evening...becoming partly cloudy.
Lows 57 to 65. Areas of winds west to 10 mph this evening
becoming light.
.SATURDAY...Partly cloudy in the morning...becoming sunny. Highs
around 80 towards the coast to 81 to 84 farther inland. Light
winds becoming southwest 10 mph in the afternoon.
.SATURDAY NIGHT...Mostly clear in the evening...becoming mostly
cloudy. Lows 59 to 66. Light winds.
.SUNDAY...Cloudy in the morning...becoming partly cloudy. Highs
77 to 81. Light winds becoming southwest 10 mph in the afternoon.
.SUNDAY NIGHT...Partly cloudy in the evening...becoming mostly
cloudy. Lows 58 to 66. Areas of winds southwest to 10 mph in the
evening becoming light.
.MONDAY...Partly cloudy in the morning...becoming mostly sunny.
Highs 76 to 79.
.MONDAY NIGHT...Mostly clear. Lows 56 to 65.
.TUESDAY...Partly cloudy in the morning...becoming mostly sunny.
Highs around 78 towards the coast to 79 to 82 farther inland.
.TUESDAY NIGHT...Mostly clear. Lows 59 to 66.
.WEDNESDAY...Mostly sunny. Highs around 84 towards the coast to
86 to 89 farther inland.
.WEDNESDAY NIGHT...Mostly clear. Lows 62 to 68.
.THURSDAY...Partly cloudy in the morning...becoming mostly sunny.
Highs around 85 towards the coast to 90 farther inland.
.THURSDAY NIGHT...Mostly clear in the evening...becoming partly
cloudy. Lows 64 to 69.
.FRIDAY...Partly cloudy. Highs 86 to 90.

$$

CAZ043-191000-
San Diego County Coastal Areas-
Including the cities of Oceanside, Vista, Carlsbad, Encinitas,
Chula Vista, National City, and San Diego
1158 AM PDT Fri Sep 18 2026

.TONIGHT...Mostly clear this evening...becoming partly cloudy.
Lows 59 to 64. Areas of winds northwest to 10 mph this evening
becoming light.
.SATURDAY...Partly cloudy in the morning...becoming mostly sunny.
Highs 75 to 79. Light winds becoming west 10 mph in the
afternoon.
.SATURDAY NIGHT...Mostly clear in the evening...becoming mostly
cloudy. Lows 60 to 64. Light winds.
.SUNDAY...Mostly cloudy in the morning...becoming partly cloudy.
Highs 73 to 78. Light winds becoming west 10 mph in the
afternoon.
.SUNDAY NIGHT...Partly cloudy in the evening...becoming cloudy.
Lows 61 to 66. Light winds.
.MONDAY...Cloudy in the morning...becoming mostly sunny. Highs
73 to 77.
.MONDAY NIGHT...Mostly clear in the evening...becoming partly
cloudy. Lows 59 to 65.
.TUESDAY...Partly cloudy in the morning...becoming mostly sunny.
Highs 74 to 78.
.TUESDAY NIGHT...Mostly clear. Lows 61 to 66.
.WEDNESDAY...Partly cloudy in the morning...becoming mostly
sunny. Highs 75 to 80 near the coast to 81 to 84 inland.
.WEDNESDAY NIGHT...Mostly clear in the evening...becoming partly
cloudy. Lows 64 to 67.
.THURSDAY...Partly cloudy. Highs 76 to 81 near the coast to 82 to
85 inland.
.THURSDAY NIGHT...Mostly clear in the evening...becoming partly
cloudy. Lows 66 to 69.
.FRIDAY...Partly cloudy. Highs 78 to 83 near the coast to 84 to
87 inland.

$$

CAZ050-191000-
San Diego County Valleys-
Including the cities of Escondido, El Cajon, San Marcos, La Mesa,
Santee, and Poway
1158 AM PDT Fri Sep 18 2026

.TONIGHT...Mostly clear this evening...becoming partly cloudy.
Lows 54 to 60. Areas of winds west to 10 mph this evening
becoming light.
.SATURDAY...Partly cloudy in the morning...becoming sunny. Highs
78 to 82 in the western valleys to 82 to 87 near the foothills.
Light winds becoming west 10 mph in the afternoon.
.SATURDAY NIGHT...Clear in the evening...becoming partly cloudy.
Lows 56 to 61. Light winds.
.SUNDAY...Partly cloudy. Highs around 80 in the western valleys
to 80 to 85 near the foothills. Light winds becoming west 10 mph
in the afternoon.
.SUNDAY NIGHT...Partly cloudy in the evening...becoming cloudy.
Lows 56 to 62. Light winds.
.MONDAY...Partly cloudy in the morning...becoming mostly sunny.
Highs 76 to 81.
.MONDAY NIGHT...Clear in the evening...becoming partly cloudy.
Lows 53 to 60.
.TUESDAY...Partly cloudy in the morning...becoming mostly sunny.
Highs around 80 in the western valleys to 79 to 84 near the
foothills.
.TUESDAY NIGHT...Clear. Lows 57 to 62.
.WEDNESDAY...Mostly sunny. Highs 83 to 86 in the western valleys
to 87 to 92 near the foothills.
.WEDNESDAY NIGHT...Mostly clear. Lows 61 to 65.
.THURSDAY...Partly cloudy in the morning...becoming mostly sunny.
Highs 84 to 88 in the western valleys to 88 to 93 near the
foothills.
.THURSDAY NIGHT...Mostly clear in the evening...becoming partly
cloudy. Lows 63 to 67.
.FRIDAY...Partly cloudy in the morning...becoming mostly sunny.
Highs 86 to 89 in the western valleys to 87 to 92 near the
foothills.

$$

CAZ048-191000-
San Bernardino and Riverside County Valleys-The Inland Empire-
Including the cities of Riverside, San Bernardino, Ontario,
Moreno Valley, Fontana, Rancho Cucamonga, and Corona
1158 AM PDT Fri Sep 18 2026

.TONIGHT...Mostly clear. Lows 53 to 61. Areas of winds west to
10 mph this evening becoming light.
.SATURDAY...Mostly sunny. Highs 85 to 90. Light winds becoming
west 10 mph in the afternoon.
.SATURDAY NIGHT...Mostly clear. Lows 56 to 64. Areas of winds
west to 10 mph in the evening becoming light.
.SUNDAY...Partly cloudy. Highs 82 to 88. Light winds becoming
west 10 mph in the afternoon.
.SUNDAY NIGHT...Partly cloudy. Lows 55 to 63. Areas of winds
southwest to 10 mph in the evening becoming light.
.MONDAY...Partly cloudy in the morning...becoming mostly sunny.
Highs 78 to 84.
.MONDAY NIGHT...Mostly clear. Lows 52 to 61.
.TUESDAY...Partly cloudy in the morning...becoming mostly sunny.
Highs 83 to 88.
.TUESDAY NIGHT...Clear. Lows 57 to 64.
.WEDNESDAY...Mostly sunny. Warmer. Highs 91 to 96.
.WEDNESDAY NIGHT...Mostly clear. Lows 62 to 68.
.THURSDAY...Mostly sunny. Highs 91 to 97.
.THURSDAY NIGHT...Mostly clear. Lows 63 to 69.
.FRIDAY...Mostly sunny. Highs 90 to 96.

$$

CAZ057-191000-
Santa Ana Mountains and Foothills-
1158 AM PDT Fri Sep 18 2026

.TONIGHT...Mostly clear. Lows 52 to 58. Areas of winds west to
10 mph this evening becoming light.
.SATURDAY...Mostly sunny. Warmer. Highs 77 to 87. Light winds
becoming west 10 mph in the afternoon.
.SATURDAY NIGHT...Clear in the evening...becoming partly cloudy.
Lows 54 to 61. Areas of winds southwest to 10 mph in the evening
becoming light.
.SUNDAY...Partly cloudy. Highs 75 to 84. Light winds becoming
southwest 10 mph in the afternoon.
.SUNDAY NIGHT...Partly cloudy. Lows 54 to 61. Areas of winds
southwest to 10 mph in the evening becoming light.
.MONDAY...Partly cloudy in the morning...becoming mostly sunny.
Highs 72 to 81.
.MONDAY NIGHT...Mostly clear. Lows 52 to 58.
.TUESDAY...Partly cloudy in the morning...becoming mostly sunny.
Highs 75 to 85.
.TUESDAY NIGHT...Clear. Lows 55 to 62.
.WEDNESDAY...Mostly sunny. Warmer. Highs 83 to 93.
.WEDNESDAY NIGHT...Mostly clear. Lows 59 to 66.
.THURSDAY...Mostly sunny. Highs 84 to 94.
.THURSDAY NIGHT...Mostly clear. Lows 60 to 68.
.FRIDAY...Mostly sunny. Highs 83 to 93.

$$

CAZ055-191000-
San Bernardino County Mountains-
Including the cities of Crestline, Lake Arrowhead, Big Bear City,
Big Bear Lake, Running Springs, and Wrightwood
1158 AM PDT Fri Sep 18 2026

.TONIGHT...Clear. Lows 41 to 51 above 6000 feet to 49 to 59 below
6000 feet. Areas of winds southwest to 10 mph this evening
becoming light.
.SATURDAY...Sunny. Highs 65 to 75 above 6000 feet to 75 to
84 below 6000 feet. Areas of winds northeast 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows 45 to 55 above 6000 feet to
53 to 63 below 6000 feet. Areas of winds south to 10 mph in the
evening becoming light.
.SUNDAY...Partly cloudy. Highs 66 to 76 above 6000 feet to 74 to
83 below 6000 feet. Areas of winds southeast to 10 mph becoming
south with gusts to 30 mph in the afternoon.
.SUNDAY NIGHT...Partly cloudy. Lows 44 to 54 above 6000 feet to
52 to 62 below 6000 feet. Areas of winds southwest 10 to 15 mph
with gusts to 25 mph in the evening becoming light.
.MONDAY...Mostly sunny. Highs 62 to 72 above 6000 feet to 68 to
78 below 6000 feet.
.MONDAY NIGHT...Mostly clear. Lows 46 to 56.
.TUESDAY...Mostly sunny. Highs 63 to 73 above 6000 feet to 72 to
81 below 6000 feet.
.TUESDAY NIGHT...Mostly clear. Lows 47 to 57.
.WEDNESDAY...Mostly sunny. Highs 67 to 77 above 6000 feet to
77 to 86 below 6000 feet.
.WEDNESDAY NIGHT...Mostly clear. Lows 50 to 60.
.THURSDAY...Mostly sunny. Highs 68 to 78 above 6000 feet to 78 to
87 below 6000 feet.
.THURSDAY NIGHT...Mostly clear. Lows 51 to 61.
.FRIDAY...Mostly sunny. A slight chance of showers in the
afternoon. Highs 67 to 77 above 6000 feet to 77 to 86 below
6000 feet.

$$

CAZ056-191000-
Riverside County Mountains-
Including the city of Idyllwild-Pine Cove
1158 AM PDT Fri Sep 18 2026

.TONIGHT...Mostly clear. Lows 46 to 56. Areas of winds northwest
to 10 mph.
.SATURDAY...Sunny, warmer. Highs 78 to 88. Light winds becoming
west 10 mph in the afternoon.
.SATURDAY NIGHT...Mostly clear. Lows 51 to 61. Areas of winds
west to 10 mph in the evening becoming light.
.SUNDAY...Mostly sunny in the morning...becoming partly cloudy.
Highs 77 to 87. Areas of winds southeast to 10 mph.
.SUNDAY NIGHT...Partly cloudy. Lows 49 to 59. Light winds.
.MONDAY...Partly cloudy in the morning...becoming mostly sunny.
Highs 72 to 82.
.MONDAY NIGHT...Mostly clear. Lows 45 to 55.
.TUESDAY...Sunny. Highs 75 to 85.
.TUESDAY NIGHT...Clear. Lows 50 to 60.
.WEDNESDAY...Sunny. Highs 78 to 88.
.WEDNESDAY NIGHT...Mostly clear. Lows 53 to 63.
.THURSDAY...Mostly sunny. Highs 79 to 89.
.THURSDAY NIGHT...Mostly clear. Lows 54 to 64.
.FRIDAY...Mostly sunny in the morning, then partly cloudy with a
slight chance of showers in the afternoon. Highs 78 to 88.

$$

CAZ058-191000-
San Diego County Mountains-
Including the cities of Julian and Pine Valley
1158 AM PDT Fri Sep 18 2026

.TONIGHT...Mostly clear. Lows 48 to 58. Areas of winds west 10 to
15 mph with gusts to 25 mph.
.SATURDAY...Sunny. Highs 79 to 88. Areas of winds west to 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows 52 to 62. Areas of winds
west to 10 mph.
.SUNDAY...Mostly sunny in the morning...becoming partly cloudy.
Highs 78 to 87. Areas of winds southeast to 10 mph becoming west
10 mph in the afternoon.
.SUNDAY NIGHT...Partly cloudy in the evening...becoming mostly
cloudy. Lows 51 to 61. Areas of winds west to 10 mph.
.MONDAY...Partly cloudy in the morning...becoming mostly sunny.
Highs 73 to 82.
.MONDAY NIGHT...Mostly clear. Lows 47 to 57.
.TUESDAY...Mostly sunny. Highs 77 to 86.
.TUESDAY NIGHT...Clear. Lows 54 to 63.
.WEDNESDAY...Mostly sunny. Highs 81 to 89.
.WEDNESDAY NIGHT...Mostly clear. Lows 57 to 67.
.THURSDAY...Mostly sunny. Highs 82 to 90.
.THURSDAY NIGHT...Mostly clear. Lows 59 to 69.
.FRIDAY...Mostly sunny in the morning, then partly cloudy with a
slight chance of showers in the afternoon. Highs 81 to 89.

$$

CAZ060-191000-
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, Apple Valley,
and Lucerne Valley
1158 AM PDT Fri Sep 18 2026

.TONIGHT...Clear. Lows 53 to 63. Areas of winds west 10 to
15 mph. Gusts to 25 mph this evening.
.SATURDAY...Sunny. Highs 86 to 90. Areas of winds west to 10 mph
in the morning becoming light.
.SATURDAY NIGHT...Mostly clear. Lows 58 to 67. Light winds.
.SUNDAY...Partly cloudy. Highs 87 to 93. Light winds becoming
east 10 to 15 mph with gusts to 25 mph in the afternoon.
.SUNDAY NIGHT...Partly cloudy. Lows 59 to 68. Areas of winds
southwest 10 to 15 mph with gusts to 25 mph in the evening
becoming light.
.MONDAY...Mostly sunny. Highs 83 to 89.
.MONDAY NIGHT...Mostly clear. Lows 56 to 64.
.TUESDAY...Sunny. Highs 85 to 89.
.TUESDAY NIGHT...Clear. Lows 60 to 67.
.WEDNESDAY...Sunny. Highs 88 to 93.
.WEDNESDAY NIGHT...Mostly clear. Lows 62 to 69.
.THURSDAY...Mostly sunny. Highs 90 to 95.
.THURSDAY NIGHT...Mostly clear. Lows 63 to 70.
.FRIDAY...Mostly sunny. Highs 89 to 94.

$$

CAZ065-191000-
San Gorgonio Pass near Banning-
1158 AM PDT Fri Sep 18 2026

.TONIGHT...Clear. Lows around 64 through the pass to 74 in the
northern Coachella Valley. Areas of winds west 15 to 25 mph with
gusts to 40 mph.
.SATURDAY...Sunny. Highs around 93 through the pass to 97 to
101 in the northern Coachella Valley. Areas of winds west 10 to
20 mph. Gusts to 35 mph...becoming 25 mph in the afternoon.
.SATURDAY NIGHT...Mostly clear. Lows around 68 through the pass
to 76 to 79 in the northern Coachella Valley. Areas of winds
northwest 10 to 20 mph with gusts to 30 mph.
.SUNDAY...Mostly sunny in the morning...becoming partly cloudy.
Highs around 92 through the pass to 96 to 99 in the northern
Coachella Valley. Areas of winds northwest 10 to 15 mph becoming
southeast in the afternoon. Gusts to 25 mph.
.SUNDAY NIGHT...Partly cloudy. Lows around 65 through the pass to
78 in the northern Coachella Valley. Areas of winds west 10 to
20 mph. Gusts to 30 mph...becoming 35 mph overnight.
.MONDAY...Mostly sunny. Breezy. Highs around 86 through the pass
to 93 to 96 in the northern Coachella Valley.
.MONDAY NIGHT...Clear, breezy. Lows 64 to 74.
.TUESDAY...Sunny. Highs 89 to 92 through the pass to 95 to 98 in
the northern Coachella Valley.
.TUESDAY NIGHT...Clear. Lows 69 to 78.
.WEDNESDAY...Sunny. Highs around 95 through the pass to 100 in
the northern Coachella Valley.
.WEDNESDAY NIGHT...Clear. Lows 72 to 80.
.THURSDAY...Mostly sunny. Highs around 96 through the pass to
99 to 102 in the northern Coachella Valley.
.THURSDAY NIGHT...Mostly clear. Lows 74 to 82.
.FRIDAY...Mostly sunny in the morning...becoming partly cloudy.
Highs around 95 through the pass to 100 in the northern Coachella
Valley.

$$

CAZ061-191000-
Coachella Valley-
Including the cities of Indio, Palm Springs, Cathedral City,
Palm Desert, Palm Desert Country, La Quinta, and Coachella
1158 AM PDT Fri Sep 18 2026

.TONIGHT...Clear. Lows 72 to 75. Areas of winds northwest 10 to
15 mph with gusts to 30 mph.
.SATURDAY...Sunny. Highs 99 to 102. Areas of winds northwest to
10 mph becoming south in the afternoon.
.SATURDAY NIGHT...Mostly clear. Lows 74 to 78. Areas of winds
northwest to 10 mph.
.SUNDAY...Mostly sunny in the morning...becoming partly cloudy.
Highs around 99. Areas of winds northwest to 10 mph becoming
southeast 10 mph in the afternoon.
.SUNDAY NIGHT...Partly cloudy. Lows 74 to 78. Areas of winds
northwest to 10 mph.
.MONDAY...Mostly sunny. Highs 95 to 98.
.MONDAY NIGHT...Clear. Lows 70 to 74.
.TUESDAY...Sunny. Highs around 100.
.TUESDAY NIGHT...Clear. Lows 74 to 78.
.WEDNESDAY...Sunny. Highs 100 to 103.
.WEDNESDAY NIGHT...Mostly clear. Lows 76 to 79.
.THURSDAY...Mostly sunny. Highs 101 to 104.
.THURSDAY NIGHT...Mostly clear. Lows around 80.
.FRIDAY...Mostly sunny in the morning...becoming partly cloudy.
Highs 100 to 103.

$$

CAZ062-191000-
San Diego County Deserts-
Including the city of Borrego Springs
1158 AM PDT Fri Sep 18 2026

.TONIGHT...Clear. Lows 69 to 76. Areas of winds west 10 to 20 mph
with gusts to 30 mph.
.SATURDAY...Sunny. Highs 99 to 103. Areas of winds west to 10 mph
in the morning becoming light.
.SATURDAY NIGHT...Mostly clear. Lows 72 to 80. Areas of winds
west 10 to 15 mph.
.SUNDAY...Mostly sunny in the morning...becoming partly cloudy.
Highs 98 to 102. Areas of winds west to 10 mph becoming east
10 mph in the afternoon.
.SUNDAY NIGHT...Partly cloudy. Lows 73 to 80. Areas of winds west
10 to 15 mph.
.MONDAY...Mostly sunny. Highs 95 to 100.
.MONDAY NIGHT...Clear. Lows 67 to 74.
.TUESDAY...Sunny. Highs 97 to 101.
.TUESDAY NIGHT...Mostly clear. Lows 74 to 81.
.WEDNESDAY...Sunny. Highs 99 to 104.
.WEDNESDAY NIGHT...Mostly clear. Lows 76 to 83.
.THURSDAY...Mostly sunny. Hot. Highs 100 to 105.
.THURSDAY NIGHT...Mostly clear. Lows 78 to 85.
.FRIDAY...Partly cloudy. Hot. Highs 100 to 105.

$$