SAN YSIDRO, CA 92143 Weather Forecast & Current Conditions

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SAN DIEGO/BROWN, CA
Current Weather

5:53 AM PDT OCT 27, 2026
Clear
55°F
Feels Like: 53°F
Dewpoint: 48°F
Rel. Hum.: 77%
Visibility:
Wind: ESE at 7 mph
Pressure: 30.00 inches
Last 72 hours

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SAN YSIDRO, CA 92143
Weather Forecast

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Snow Depth pages
TODAY
Partly cloudy with patchy fog this morning...becoming mostly sunny. Highs 72 to 75 near the coast to 76 inland. Light winds becoming west 10 mph this afternoon.
TONIGHT
Partly cloudy in the evening...becoming mostly cloudy overnight with patchy fog. Lows 54 to 58. Light winds.
WEDNESDAY
Patchy fog in the morning. Partly cloudy. Highs around 72 near the coast to 73 to 76 inland. Light winds becoming southwest 10 mph in the afternoon.
WEDNESDAY NIGHT
Partly cloudy in the evening...becoming mostly cloudy. Lows 56 to 61. Light winds.
THURSDAY
Mostly cloudy in the morning...becoming partly cloudy. Highs 71 to 75. Light winds becoming west 10 mph in the afternoon.
THURSDAY NIGHT
Partly cloudy in the evening, then mostly cloudy with a slight chance of showers overnight. Lows 58 to 62.
FRIDAY
Cloudy with a slight chance of showers in the morning, then partly cloudy in the afternoon. Highs 69 to 72.
FRIDAY NIGHT
Partly cloudy with a slight chance of showers in the evening, then mostly cloudy with a chance of showers overnight. Lows 56 to 60.
SATURDAY
Cloudy in the morning...becoming mostly cloudy. A chance of showers. Highs around 68.
SATURDAY NIGHT
A chance of showers in the evening, then showers likely overnight. Lows 56 to 60.
SUNDAY
Cloudy with showers likely in the morning, then mostly cloudy with a chance of showers in the afternoon. Highs around 70.
SUNDAY NIGHT
Partly cloudy. A chance of showers. Lows 54 to 58.
MONDAY
Partly cloudy in the morning...becoming mostly sunny. Highs 71 to 74.

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 10/26/2026
Tuesday
27 OCT 2026
SAN YSIDRO, CA 92143 weather forecast Day 1, 0 hours 10 PM 64° 64° Partly Cloudy 3%

0% Thunder
( 0% severe)
NNE   6 84% 59°
Low 57° SAN YSIDRO, CA 92143 weather forecast Day 1, 3 hours 1 AM 61° 62° Partly Cloudy E   3 84% 56°
High 75° SAN YSIDRO, CA 92143 weather forecast Day 1, 6 hours 4 AM 58° 58° Partly Cloudy 0%

0% Thunder
( 0% severe)
E   5 83% 53°

Clear



SAN YSIDRO, CA 92143 weather forecast Day 1, 9 hours 7 AM 59° 58° Clear ESE   6 75% 51°
SAN YSIDRO, CA 92143 weather forecast Day 1, 12 hours 10 AM 72° 72° Clear 0%

0% Thunder
( 0% severe)
W   3 49% 52°
SAN YSIDRO, CA 92143 weather forecast Day 1, 15 hours 1 PM 74° 74° Clear W   12 53% 56°
SAN YSIDRO, CA 92143 weather forecast Day 1, 18 hours 4 PM 71° 71° Clear 0%

0% Thunder
( 0% severe)
W   9 66% 59°
SAN YSIDRO, CA 92143 weather forecast Day 1, 21 hours 7 PM 65° 65° Partly Cloudy W   1 81% 59°
Wednesday
28 OCT 2026
SAN YSIDRO, CA 92143 weather forecast Day 2, 0 hours 10 PM 62° 62° Mostly Cloudy 0%

0% Thunder
( 0% severe)
SE   6 87% 58°
Low 58° SAN YSIDRO, CA 92143 weather forecast Day 2, 3 hours 1 AM 60° 60° Mostly Cloudy ESE   6 87% 56°
High 73° SAN YSIDRO, CA 92143 weather forecast Day 2, 6 hours 4 AM 58° 58° Mostly Cloudy 0%

0% Thunder
( 0% severe)
E   5 90% 55°

Mostly Cloudy



SAN YSIDRO, CA 92143 weather forecast Day 2, 9 hours 7 AM 59° 58° Mostly Cloudy E   6 83% 54°
SAN YSIDRO, CA 92143 weather forecast Day 2, 12 hours 10 AM 69° 69° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   2 57% 53°
SAN YSIDRO, CA 92143 weather forecast Day 2, 15 hours 1 PM 73° 73° Mostly Cloudy W   10 55% 56°
SAN YSIDRO, CA 92143 weather forecast Day 2, 18 hours 4 PM 69° 69° Mostly Cloudy 0%

0% Thunder
( 0% severe)
W   9 70% 59°
SAN YSIDRO, CA 92143 weather forecast Day 2, 21 hours 7 PM 65° 65° Mostly Cloudy W   2 78% 58°

SAN DIEGO/BROWN, CA extended weather forecast

Thursday
29 OCT 2026
Friday
30 OCT 2026
Saturday
31 OCT 2026
Sunday
1 NOV 2026
Monday
2 NOV 2026
Low 58° Low 58° Low 59° Low 56° Low 55°
High 73° High 71° High 71° High 69° High 76°
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
Overcast
9% Rain
Overcast
19% Rain
Mostly Cloudy
44% Rain
Overcast
71% Rain
Clear
19% Rain
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