Hourly Weather Forecast - San Geronimo, CA

9 AM
40°F
0%
1mph
E
Foggy
Humidity
100%
Feels like
40°F
Dew Point
40°F
10 AM
42°F
0%
1mph
E
Partly Cloudy
Humidity
97%
Feels like
42°F
Dew Point
41°F
11 AM
44°F
0%
1mph
ENE
Partly Cloudy
Humidity
93%
Feels like
44°F
Dew Point
42°F
12 PM
47°F
0%
1mph
N
Partly Cloudy
Humidity
88%
Feels like
47°F
Dew Point
44°F
1 PM
50°F
0%
1mph
NNW
Partly Cloudy
Humidity
83%
Feels like
50°F
Dew Point
45°F
2 PM
50°F
0%
1mph
NW
Partly Cloudy
Humidity
84%
Feels like
50°F
Dew Point
46°F
3 PM
49°F
0%
1mph
NW
Partly Cloudy
Humidity
90%
Feels like
49°F
Dew Point
46°F
4 PM
46°F
0%
1mph
NW
Partly Cloudy
Humidity
98%
Feels like
46°F
Dew Point
46°F
4:52 PM
5 PM
45°F
0%
1mph
NW
Foggy
Humidity
100%
Feels like
45°F
Dew Point
45°F
6 PM
45°F
0%
1mph
NW
Foggy
Humidity
100%
Feels like
45°F
Dew Point
45°F
7 PM
45°F
0%
0mph
NW
Foggy
Humidity
100%
Feels like
45°F
Dew Point
45°F
8 PM
46°F
0%
0mph
NW
Foggy
Humidity
100%
Feels like
46°F
Dew Point
46°F
9 PM
46°F
0%
1mph
NW
Foggy
Humidity
100%
Feels like
46°F
Dew Point
46°F
10 PM
46°F
10%
1mph
NW
Foggy
Humidity
100%
Feels like
46°F
Dew Point
46°F
11 PM
46°F
10%
1mph
NW
Foggy
Humidity
100%
Feels like
46°F
Dew Point
46°F

Rainfall Totals Through Wednesday A.M.

Heavy Rain Returns to Deluge Pacific Northwest

Another atmospheric river will hit the Pacific Northwest with heavy rain and high winds.

Monday's Weather Outlook

Today'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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