Hourly Weather Forecast - San Ysidro, CA

12 AM
56°F
50%
5mph
S
50% Chance Rain Showers
Humidity
95%
Feels like
56°F
Dew Point
54°F
1 AM
55°F
60%
6mph
S
60% Chance of Light Rain
Humidity
97%
Feels like
55°F
Dew Point
54°F
2 AM
55°F
70%
5mph
S
70% Chance of Light Rain
Humidity
99%
Feels like
55°F
Dew Point
54°F
3 AM
54°F
70%
5mph
S
70% Chance of Light Rain
Humidity
99%
Feels like
54°F
Dew Point
54°F
4 AM
54°F
70%
5mph
S
70% Chance of Light Rain
Humidity
100%
Feels like
54°F
Dew Point
54°F

Rain And Snow Totals Through Monday

Atmospheric River Takes Aim For Northern California

The plume of abundant moisture impacting the Northwest the last several days will focus more on Northern California later today into Monday bringing heavy rainfall and mountain snow.

NOAA, NCDC

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During Extreme Cold: Watch for Frostbite!

Flu Update Valid For Week Ending December 13, 2025

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Watch vs. Warning

Flash Flood Watch and Warning Defined

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