SAN YSIDRO, CA 92143 Weather Forecast & Current Conditions

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SAN DIEGO/BROWN, CA
Current Weather

8:53 PM PST JAN 17, 2026
Clear
57°F
Feels Like: 56°F
Dewpoint: 28°F
Rel. Hum.: 33%
Visibility: 10 miles
Wind: ESE at 6 mph
Pressure: 30.11 inches
Last 72 hours

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SAN YSIDRO, CA 92143
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Partly cloudy. Lows 50 to 54. Areas of winds east to 10 mph.
SUNDAY
Partly cloudy. Highs 71 to 75 near the coast to 78 inland. Light winds becoming west 10 mph in the afternoon.
SUNDAY NIGHT
Partly cloudy. Patchy fog overnight. Lows 49 to 53. Light winds.
MARTIN LUTHER KING JR DAY
Partly cloudy. Highs 68 to 72 near the coast to 73 to 76 inland. Light winds.
MONDAY NIGHT
Partly cloudy. Patchy fog overnight. Lows 48 to 52. Light winds.
TUESDAY
Partly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs 69 to 72 near the coast to 75 inland.
TUESDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 49 to 52.
WEDNESDAY
Partly cloudy. Highs 67 to 71 near the coast to 72 inland.
WEDNESDAY NIGHT
Partly cloudy. Lows 49 to 52.
THURSDAY
Partly cloudy. Highs 66 to 69 near the coast to 71 inland.
THURSDAY NIGHT
Partly cloudy in the evening...becoming mostly cloudy. Lows 48 to 53.
FRIDAY
Mostly cloudy in the morning...becoming partly cloudy. Highs 65 to 69.
FRIDAY NIGHT
Partly cloudy in the evening...becoming mostly cloudy. A slight chance of showers. Lows 49 to 52.

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  1/17/2026
Sunday
18 JAN 2026
SAN YSIDRO, CA 92143 weather forecast Day 1, 0 hours 10 PM 59° 58° Partly Cloudy 0%

0% Thunder
( 0% severe)
ESE   7 32% 29°
Low 53° SAN YSIDRO, CA 92143 weather forecast Day 1, 3 hours 1 AM 56° 55° Partly Cloudy E   6 34% 28°
High 78° SAN YSIDRO, CA 92143 weather forecast Day 1, 6 hours 4 AM 55° 54° Mostly Cloudy 0%

0% Thunder
( 0% severe)
ESE   6 31% 25°

Mostly Cloudy



SAN YSIDRO, CA 92143 weather forecast Day 1, 9 hours 7 AM 54° 53° Mostly Cloudy ESE   6 32% 25°
SAN YSIDRO, CA 92143 weather forecast Day 1, 12 hours 10 AM 71° 71° Partly Cloudy 0%

0% Thunder
( 0% severe)
NE   5 21% 29°
SAN YSIDRO, CA 92143 weather forecast Day 1, 15 hours 1 PM 76° 76° Partly Cloudy WNW   7 20% 32°
SAN YSIDRO, CA 92143 weather forecast Day 1, 18 hours 4 PM 72° 72° Partly Cloudy 0%

0% Thunder
( 0% severe)
W   6 29% 38°
SAN YSIDRO, CA 92143 weather forecast Day 1, 21 hours 7 PM 61° 62° Partly Cloudy SSE   3 50% 42°
Monday
19 JAN 2026
SAN YSIDRO, CA 92143 weather forecast Day 2, 0 hours 10 PM 57° 57° Partly Cloudy 0%

0% Thunder
( 0% severe)
ESE   3 51% 39°
Low 51° SAN YSIDRO, CA 92143 weather forecast Day 2, 3 hours 1 AM 54° 54° Partly Cloudy ESE   3 50% 36°
High 74° SAN YSIDRO, CA 92143 weather forecast Day 2, 6 hours 4 AM 52° 52° Partly Cloudy 0%

0% Thunder
( 0% severe)
ESE   3 48% 33°

Partly Cloudy



SAN YSIDRO, CA 92143 weather forecast Day 2, 9 hours 7 AM 52° 52° Partly Cloudy E   3 46% 32°
SAN YSIDRO, CA 92143 weather forecast Day 2, 12 hours 10 AM 68° 68° Partly Cloudy 0%

0% Thunder
( 0% severe)
SE   2 29% 35°
SAN YSIDRO, CA 92143 weather forecast Day 2, 15 hours 1 PM 72° 72° Partly Cloudy W   6 31% 40°
SAN YSIDRO, CA 92143 weather forecast Day 2, 18 hours 4 PM 68° 68° Partly Cloudy 0%

0% Thunder
( 0% severe)
W   6 42% 44°
SAN YSIDRO, CA 92143 weather forecast Day 2, 21 hours 7 PM 60° 61° Partly Cloudy ENE   3 62% 47°

SAN DIEGO/BROWN, CA extended weather forecast

BAD DAY
BAD DATE
BAD DAY
BAD DATE
BAD DAY
BAD DATE
BAD DAY
BAD DATE
BAD DAY
BAD DATE
Low 47° Low 48° Low 45° Low 45° Low 46°
High 76° High 76° High 71° High 69° 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
Partly Cloudy
1% Rain
Partly Cloudy
1% Rain
Partly Cloudy
2% Rain
Partly Cloudy
5% Rain
Partly Cloudy
8% Rain
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