Hourly Weather Forecast - Rosemont, CA

12 AM
49°F
60%
9mph
SSE
60% Chance of Light Rain
Humidity
98%
Feels like
45°F
Dew Point
48°F
1 AM
49°F
60%
9mph
SSE
60% Chance of Light Rain
Humidity
98%
Feels like
45°F
Dew Point
48°F
2 AM
49°F
70%
9mph
SSE
70% Chance of Light Rain
Humidity
98%
Feels like
45°F
Dew Point
48°F
3 AM
48°F
70%
9mph
SSE
70% Chance of Light Rain
Humidity
100%
Feels like
44°F
Dew Point
48°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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