Hourly Weather Forecast - Walnut, CA

12 AM
57°F
100%
5mph
SSE
Light Rain
Humidity
98%
Feels like
57°F
Dew Point
57°F
1 AM
57°F
90%
5mph
SSE
Light Rain
Humidity
98%
Feels like
57°F
Dew Point
57°F
2 AM
57°F
80%
5mph
SSE
80% Chance of Rain
Humidity
98%
Feels like
57°F
Dew Point
56°F
3 AM
57°F
70%
4mph
SSE
70% Chance of Rain
Humidity
98%
Feels like
57°F
Dew Point
56°F
4 AM
56°F
70%
4mph
SSE
70% Chance of Light Rain
Humidity
98%
Feels like
56°F
Dew Point
56°F
5 AM
56°F
70%
4mph
SSE
70% Chance of Light Rain
Humidity
98%
Feels like
56°F
Dew Point
56°F
6 AM
57°F
70%
4mph
SSE
70% Chance of Light Rain
Humidity
98%
Feels like
57°F
Dew Point
56°F
6:55 AM
7 AM
57°F
70%
4mph
SSE
70% Chance of Light Rain
Humidity
96%
Feels like
57°F
Dew Point
56°F
8 AM
58°F
70%
5mph
SSE
70% Chance of Light Rain
Humidity
95%
Feels like
58°F
Dew Point
57°F
9 AM
58°F
70%
5mph
SSE
70% Chance of Light Rain
Humidity
95%
Feels like
58°F
Dew Point
57°F
10 AM
58°F
70%
5mph
SSE
70% Chance of Light Rain
Humidity
95%
Feels like
58°F
Dew Point
57°F
11 AM
58°F
70%
5mph
S
70% Chance of Light Rain
Humidity
93%
Feels like
58°F
Dew Point
56°F
12 PM
59°F
80%
5mph
SSW
80% Chance of Light Rain
Humidity
91%
Feels like
59°F
Dew Point
56°F
1 PM
59°F
80%
5mph
SSW
80% Chance of Light Rain
Humidity
90%
Feels like
59°F
Dew Point
56°F
2 PM
59°F
80%
4mph
SSW
80% Chance of Light Rain
Humidity
90%
Feels like
59°F
Dew Point
56°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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Sunday's Weather Outlook

Sunday's Weather Outlook

Cold weather

During Extreme Cold: Watch for Frostbite!

Flu Update Valid For Week Ending December 13, 2025

Weekly Flu Update: Flu Spreading Hard Across U.S.

Watch vs. Warning

Flash Flood Watch and Warning Defined

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