SAN YSIDRO, CA 92143 Weather Forecast & Current Conditions

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SAN DIEGO/BROWN, CA
Current Weather

10:53 PM PDT JUL 20, 2026
Clear
68°F
Feels Like: 68°F
Dewpoint: 66°F
Rel. Hum.: 93%
Visibility: 10 miles
Wind: Calm
Pressure: 29.95 inches
Last 72 hours

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SAN YSIDRO, CA 92143
Weather Forecast

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Snow Depth pages
TONIGHT
Partly cloudy. Patchy fog overnight. Lows 64 to 69. Areas of winds west to 10 mph this evening becoming light.
TUESDAY
Partly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs 75 to 80 near the coast to 81 to 86 inland. Areas of winds southwest to 10 mph.
TUESDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 64 to 69. Areas of winds west to 10 mph in the evening becoming light.
WEDNESDAY
Partly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs 77 to 81 near the coast to 83 to 88 inland. Areas of winds west to 10 mph...becoming 10 to 15 mph in the afternoon.
WEDNESDAY NIGHT
Mostly clear in the evening...becoming partly cloudy overnight with patchy fog. Lows 64 to 69. Areas of winds northwest 10 to 15 mph in the evening becoming light.
THURSDAY
Mostly cloudy with patchy fog in the morning... Becoming mostly sunny. Highs 74 to 79 near the coast to 83 to 88 inland.
THURSDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 65 to 69.
FRIDAY
Partly cloudy. Highs 75 to 80 near the coast to 83 to 88 inland.
FRIDAY NIGHT
Partly cloudy. Lows 65 to 69.
SATURDAY
Partly cloudy. Highs 76 to 81 near the coast to 84 to 89 inland.
SATURDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 65 to 69.
SUNDAY
Partly cloudy. Highs 77 to 82 near the coast to 86 to 90 inland.
SUNDAY NIGHT
Mostly clear in the evening...becoming partly cloudy. Lows 65 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 PM MDT  7/20/2026
Tuesday
21 JUL 2026
SAN YSIDRO, CA 92143 weather forecast Day 1, 0 hours 11 PM 69° 69° Partly Cloudy 1%

0% Thunder
( 0% severe)
W   3 81% 63°
Low 67° SAN YSIDRO, CA 92143 weather forecast Day 1, 3 hours 2 AM 69° 69° Partly Cloudy W   2 81% 63°
High 81° SAN YSIDRO, CA 92143 weather forecast Day 1, 6 hours 5 AM 68° 68° Partly Cloudy 1%

0% Thunder
( 0% severe)
N   1 81% 62°

Partly Cloudy



SAN YSIDRO, CA 92143 weather forecast Day 1, 9 hours 8 AM 71° 71° Partly Cloudy WSW   2 71% 61°
SAN YSIDRO, CA 92143 weather forecast Day 1, 12 hours 11 AM 79° 80° Partly Cloudy 2%

0% Thunder
( 0% severe)
W   9 52% 60°
SAN YSIDRO, CA 92143 weather forecast Day 1, 15 hours 2 PM 80° 81° Clear W   12 49% 59°
SAN YSIDRO, CA 92143 weather forecast Day 1, 18 hours 5 PM 78° 79° Clear 3%

0% Thunder
( 0% severe)
W   12 50% 58°
SAN YSIDRO, CA 92143 weather forecast Day 1, 21 hours 8 PM 72° 72° Clear WNW   8 61% 58°
Wednesday
22 JUL 2026
SAN YSIDRO, CA 92143 weather forecast Day 2, 0 hours 11 PM 70° 70° Clear 2%

0% Thunder
( 0% severe)
WNW   6 71% 60°
Low 68° SAN YSIDRO, CA 92143 weather forecast Day 2, 3 hours 2 AM 69° 69° Partly Cloudy W   3 76% 61°
High 80° SAN YSIDRO, CA 92143 weather forecast Day 2, 6 hours 5 AM 69° 69° Partly Cloudy 0%

0% Thunder
( 0% severe)
W   3 78% 62°

Partly Cloudy



SAN YSIDRO, CA 92143 weather forecast Day 2, 9 hours 8 AM 70° 70° Partly Cloudy NW   5 78% 63°
SAN YSIDRO, CA 92143 weather forecast Day 2, 12 hours 11 AM 78° 80° Clear 0%

0% Thunder
( 0% severe)
WNW   12 67% 66°
SAN YSIDRO, CA 92143 weather forecast Day 2, 15 hours 2 PM 79° 81° Clear WNW   14 67% 67°
SAN YSIDRO, CA 92143 weather forecast Day 2, 18 hours 5 PM 77° 79° Clear 0%

0% Thunder
( 0% severe)
WNW   13 71% 67°
SAN YSIDRO, CA 92143 weather forecast Day 2, 21 hours 8 PM 71° 71° Clear NW   14 87% 67°

SAN DIEGO/BROWN, CA extended weather forecast

Thursday
23 JUL 2026
Friday
24 JUL 2026
Saturday
25 JUL 2026
Sunday
26 JUL 2026
Monday
27 JUL 2026
Low 66° Low 66° Low 67° Low 66° Low 65°
High 81° High 80° High 81° High 83° High 82°
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
Mostly Cloudy
Overcast
Mostly Cloudy
1% Rain
Mostly Cloudy
2% Rain
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