Hourly Weather Forecast - Alta Loma, CA

12 AM
57°F
70%
5mph
S
70% Chance of Rain
Humidity
78%
Feels like
57°F
Dew Point
50°F
1 AM
57°F
70%
4mph
S
70% Chance of Rain
Humidity
78%
Feels like
57°F
Dew Point
50°F
2 AM
57°F
80%
4mph
S
80% Chance of Rain
Humidity
77%
Feels like
57°F
Dew Point
50°F
3 AM
56°F
80%
4mph
SSE
80% Chance of Rain
Humidity
78%
Feels like
56°F
Dew Point
50°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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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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