SAN YSIDRO, CA 92143 Weather Forecast & Current Conditions

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SAN DIEGO/BROWN, CA
Current Weather

5:53 PM PDT AUG 17, 2026
Clear
77°F
Feels Like: 79°F
Dewpoint: 64°F
Rel. Hum.: 64%
Visibility: 10 miles
Wind: W at 10 mph
Pressure: 29.93 inches
Last 72 hours

Local Area Snow Depth

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SAN YSIDRO, CA 92143
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Partly cloudy. Patchy dense fog overnight. Lows 63 to 68. Areas of winds northwest 10 to 15 mph this evening becoming light.
TUESDAY
Mostly cloudy with patchy fog in the morning... Becoming partly cloudy. Highs 75 to 80 near the coast to 81 to 86 inland. Areas of winds west to 10 mph.
TUESDAY NIGHT
Partly cloudy. Patchy fog overnight. Lows 64 to 69. Areas of winds west to 10 mph in the evening becoming light.
WEDNESDAY
Mostly cloudy with patchy fog in the morning... Becoming partly cloudy. Highs 76 to 81 near the coast to 82 to 87 inland. Light winds becoming west 10 mph in the afternoon.
WEDNESDAY NIGHT
Partly cloudy. Patchy fog overnight. Lows 65 to 69. Light winds.
THURSDAY
Mostly cloudy with patchy fog in the morning... Becoming partly cloudy. Highs 76 to 81 near the coast to 83 to 87 inland.
THURSDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 65 to 69.
FRIDAY
Partly cloudy. Highs 77 to 82 near the coast to 84 to 88 inland.
FRIDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 65 to 69.
SATURDAY
Partly cloudy. Highs 78 to 82 near the coast to 84 to 88 inland.
SATURDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 65 to 70.
SUNDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 77 to 82 near the coast to 83 to 87 inland.
SUNDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 64 to 69.

Visible Weather Satellite
SAN YSIDRO, CA 92143
Infrared Weather Satellite
SAN YSIDRO, CA 92143
NEXRAD Weather Radar
SAN YSIDRO, CA 92143

SAN DIEGO/BROWN, CA 3 hourly weather forecast

weather forecast created  6:00 AM MDT  8/17/2026
Monday
17 AUG 2026
SAN YSIDRO, CA 92143 weather forecast Day 1, 12 hours 11 AM 77° 79° Partly Cloudy 0%

0% Thunder
( 0% severe)
WNW   9 69% 66°
High 81° SAN YSIDRO, CA 92143 weather forecast Day 1, 15 hours 2 PM 80° 82° Partly Cloudy WNW   13 62% 66°
Partly Cloudy



SAN YSIDRO, CA 92143 weather forecast Day 1, 18 hours 5 PM 78° 80° Clear 0%

0% Thunder
( 0% severe)
WNW   12 64% 65°
SAN YSIDRO, CA 92143 weather forecast Day 1, 21 hours 8 PM 71° 71° Clear WNW   8 81% 65°
Tuesday
18 AUG 2026
SAN YSIDRO, CA 92143 weather forecast Day 2, 0 hours 11 PM 69° 69° Partly Cloudy 0%

0% Thunder
( 0% severe)
WNW   5 87% 65°
Low 68° SAN YSIDRO, CA 92143 weather forecast Day 2, 3 hours 2 AM 68° 68° Partly Cloudy NW   5 90% 65°
High 81° SAN YSIDRO, CA 92143 weather forecast Day 2, 6 hours 5 AM 68° 68° Mostly Cloudy 0%

0% Thunder
( 0% severe)
NNW   3 90% 65°

Mostly Cloudy



SAN YSIDRO, CA 92143 weather forecast Day 2, 9 hours 8 AM 69° 69° Mostly Cloudy NW   3 87% 65°
SAN YSIDRO, CA 92143 weather forecast Day 2, 12 hours 11 AM 78° 80° Partly Cloudy 1%

0% Thunder
( 0% severe)
WNW   8 67% 66°
SAN YSIDRO, CA 92143 weather forecast Day 2, 15 hours 2 PM 80° 82° Partly Cloudy W   12 62% 66°
SAN YSIDRO, CA 92143 weather forecast Day 2, 18 hours 5 PM 78° 80° Partly Cloudy 1%

0% Thunder
( 0% severe)
WNW   10 64% 65°
SAN YSIDRO, CA 92143 weather forecast Day 2, 21 hours 8 PM 71° 71° Partly Cloudy WNW   6 81% 65°
Wednesday
19 AUG 2026
SAN YSIDRO, CA 92143 weather forecast Day 3, 0 hours 11 PM 69° 69° Partly Cloudy 0%

0% Thunder
( 0% severe)
WNW   3 90% 66°
Low 68° SAN YSIDRO, CA 92143 weather forecast Day 3, 3 hours 2 AM 69° 69° Mostly Cloudy NW   3 87% 65°
High 82° SAN YSIDRO, CA 92143 weather forecast Day 3, 6 hours 5 AM 69° 69° Mostly Cloudy 0%

0% Thunder
( 0% severe)
N   3 87% 65°

Decreasing Clouds



SAN YSIDRO, CA 92143 weather forecast Day 3, 9 hours 8 AM 70° 70° Mostly Cloudy NW   3 84% 65°
SAN YSIDRO, CA 92143 weather forecast Day 3, 15 hours 11 AM 79° 81° Clear 0%

0% Thunder
( 1% severe)
WNW   7 64% 66°
SAN YSIDRO, CA 92143 weather forecast Day 3, 18 hours 2 PM 81° 83° Clear W   12 60% 66°
SAN YSIDRO, CA 92143 weather forecast Day 3, 21 hours 5 PM 79° 81° Clear     W   10 64% 66°

SAN DIEGO/BROWN, CA extended weather forecast

Thursday
20 AUG 2026
Friday
21 AUG 2026
Saturday
22 AUG 2026
Sunday
23 AUG 2026
Monday
24 AUG 2026
Low 66° Low 65° Low 66° Low 66° Low 67°
High 83° High 84° High 86° High 88° High 86°
SAN YSIDRO, CA 92143 weather forecast Day 4 SAN YSIDRO, CA 92143 weather forecast Day 5 SAN YSIDRO, CA 92143 weather forecast Day 6 SAN YSIDRO, CA 92143 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Mostly Cloudy
Overcast
22% Rain
Partly Cloudy
3% Rain
Partly Cloudy
12% Rain
Partly Cloudy
6% Rain
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