Hourly Weather Forecast - Altadena, CA

4:45 PM
5 PM
63°F
0%
3mph
NW
Clear
Humidity
58%
Feels like
63°F
Dew Point
48°F
6 PM
62°F
0%
4mph
NW
Clear
Humidity
60%
Feels like
62°F
Dew Point
48°F
7 PM
62°F
0%
4mph
NW
Clear
Humidity
60%
Feels like
62°F
Dew Point
48°F
8 PM
61°F
0%
3mph
NW
Mostly Clear
Humidity
59%
Feels like
61°F
Dew Point
47°F
9 PM
61°F
0%
3mph
SSE
Mostly Clear
Humidity
56%
Feels like
61°F
Dew Point
46°F
10 PM
61°F
0%
3mph
SE
Mostly Clear
Humidity
53%
Feels like
61°F
Dew Point
44°F
11 PM
62°F
0%
3mph
ESE
Mostly Clear
Humidity
50%
Feels like
62°F
Dew Point
43°F

Rainfall and Snowfall Totals Through Thursday

Flooding Rain, Heavy Snow and Winds Slam Northwest, North-Central U.S.

The atmospheric river this week will keep buffeting the Pacific Northwest with heavy rain, snow, and high winds.

Thursday's Weather Outlook

Thursday's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A person standing in a snowy forest with their back to the camera. They are bundled up in a white hat and a brown jacket. (Image by StockSnap from Pixabay)

Common Cold Weather Illnesses

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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