SAN YSIDRO, CA 92143 Weather Forecast & Current Conditions

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SAN DIEGO/BROWN, CA
Current Weather

6:53 AM PST FEB 26, 2026
Clear
Haze
54°F
Feels Like: 53°F
Dewpoint: 48°F
Rel. Hum.: 80%
Visibility: 4 miles
Wind: ENE at 5 mph
Pressure: 30.06 inches
Last 72 hours

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SAN YSIDRO, CA 92143
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Mostly sunny. Highs 73 to 78 near the coast to 80 to 85 inland. Light winds becoming west 10 mph this afternoon.
TONIGHT
Mostly clear in the evening...becoming partly cloudy. Lows around 60. Light winds.
FRIDAY
Mostly sunny. Highs 78 to 83 near the coast to 86 to 90 inland. Light winds becoming west 10 mph in the afternoon.
FRIDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 55 to 60. Light winds.
SATURDAY
Mostly cloudy in the morning...becoming partly cloudy. Highs 76 to 81 near the coast to 83 to 87 inland. Light winds becoming west 10 mph in the afternoon.
SATURDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 52 to 57.
SUNDAY
Partly cloudy. Highs 70 to 74 near the coast to 75 to 78 inland.
SUNDAY NIGHT
Partly cloudy in the evening...becoming mostly cloudy. Lows 50 to 54.
MONDAY
Mostly cloudy in the morning...becoming partly cloudy. Highs 66 to 69 near the coast to 71 inland.
MONDAY NIGHT
Partly cloudy. Lows 49 to 52.
TUESDAY
Partly cloudy. Highs 66 to 70 near the coast to 71 inland.
TUESDAY NIGHT
Partly cloudy. Lows 50 to 53.
WEDNESDAY
Partly cloudy. Highs 68 to 72 near the coast to 74 inland.

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  5:00 PM MST  2/25/2026
Thursday
26 FEB 2026
SAN YSIDRO, CA 92143 weather forecast Day 1, 0 hours 10 PM 59° 60° Clear 0%

0% Thunder
( 0% severe)
S   2 90% 56°
Low 55° SAN YSIDRO, CA 92143 weather forecast Day 1, 3 hours 1 AM 57° 58° Clear ENE   2 90% 54°
High 80° SAN YSIDRO, CA 92143 weather forecast Day 1, 6 hours 4 AM 56° 56° Clear 0%

0% Thunder
( 0% severe)
ENE   2 86% 52°

Clear



SAN YSIDRO, CA 92143 weather forecast Day 1, 9 hours 7 AM 57° 58° Partly Cloudy E   2 83% 52°
SAN YSIDRO, CA 92143 weather forecast Day 1, 12 hours 10 AM 75° 75° Clear 0%

0% Thunder
( 0% severe)
NW   3 46% 53°
SAN YSIDRO, CA 92143 weather forecast Day 1, 15 hours 1 PM 79° 80° Clear W   8 47% 57°
SAN YSIDRO, CA 92143 weather forecast Day 1, 18 hours 4 PM 76° 78° Clear 0%

0% Thunder
( 0% severe)
WNW   8 52% 57°
SAN YSIDRO, CA 92143 weather forecast Day 1, 21 hours 7 PM 66° 66° Clear WNW   3 73% 57°
Friday
27 FEB 2026
SAN YSIDRO, CA 92143 weather forecast Day 2, 0 hours 10 PM 63° 64° Clear 0%

0% Thunder
( 0% severe)
ESE   2 78% 56°
Low 59° SAN YSIDRO, CA 92143 weather forecast Day 2, 3 hours 1 AM 61° 62° Clear E   2 81% 55°
High 85° SAN YSIDRO, CA 92143 weather forecast Day 2, 6 hours 4 AM 59° 60° Clear 0%

0% Thunder
( 0% severe)
ENE   3 78% 52°

Clear



SAN YSIDRO, CA 92143 weather forecast Day 2, 9 hours 7 AM 61° 62° Clear E   3 70% 51°
SAN YSIDRO, CA 92143 weather forecast Day 2, 12 hours 10 AM 80° 80° Clear 0%

0% Thunder
( 0% severe)
WNW   3 39% 53°
SAN YSIDRO, CA 92143 weather forecast Day 2, 15 hours 1 PM 83° 82° Clear WNW   7 40% 56°
SAN YSIDRO, CA 92143 weather forecast Day 2, 18 hours 4 PM 80° 80° Clear 0%

0% Thunder
( 0% severe)
WNW   7 44% 56°
SAN YSIDRO, CA 92143 weather forecast Day 2, 21 hours 7 PM 69° 69° Clear NNW   3 66% 57°

SAN DIEGO/BROWN, CA extended weather forecast

Saturday
28 FEB 2026
Sunday
1 MAR 2026
Monday
2 MAR 2026
Tuesday
3 MAR 2026
Wednesday
4 MAR 2026
Low 56° Low 53° Low 50° Low 50° Low 48°
High 81° High 76° High 66° High 66° High 66°
SAN YSIDRO, CA 92143 weather forecast Day 3 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
Mostly Cloudy
1% Rain
Partly Cloudy
4% Rain
Overcast
11% Rain
Overcast
37% Rain
Overcast
22% Rain
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