Hourly Weather Forecast - Portola, CA

9 AM
40°F
0%
2mph
ENE
Partly Cloudy
Humidity
56%
Feels like
40°F
Dew Point
26°F
10 AM
46°F
0%
2mph
ENE
Partly Cloudy
Humidity
48%
Feels like
46°F
Dew Point
27°F
11 AM
51°F
0%
1mph
ESE
Partly Cloudy
Humidity
41%
Feels like
51°F
Dew Point
28°F
12 PM
55°F
0%
2mph
SW
Mostly Cloudy
Humidity
36%
Feels like
55°F
Dew Point
29°F
1 PM
58°F
0%
3mph
SW
Mostly Cloudy
Humidity
33%
Feels like
58°F
Dew Point
29°F
2 PM
58°F
0%
3mph
SW
Partly Cloudy
Humidity
33%
Feels like
58°F
Dew Point
29°F
3 PM
55°F
0%
2mph
WSW
Partly Cloudy
Humidity
38%
Feels like
55°F
Dew Point
30°F
4 PM
49°F
0%
2mph
WSW
Partly Cloudy
Humidity
47%
Feels like
49°F
Dew Point
30°F
4:38 PM
5 PM
43°F
0%
2mph
WSW
Partly Cloudy
Humidity
59%
Feels like
43°F
Dew Point
29°F
6 PM
39°F
0%
1mph
SW
Partly Cloudy
Humidity
67%
Feels like
39°F
Dew Point
29°F
7 PM
36°F
0%
1mph
SSW
Partly Cloudy
Humidity
72%
Feels like
36°F
Dew Point
28°F
8 PM
34°F
0%
2mph
S
Partly Cloudy
Humidity
76%
Feels like
34°F
Dew Point
27°F
9 PM
32°F
0%
2mph
SSE
Mostly Clear
Humidity
79%
Feels like
32°F
Dew Point
27°F
10 PM
31°F
0%
2mph
SSE
Mostly Clear
Humidity
82%
Feels like
31°F
Dew Point
26°F
11 PM
30°F
0%
2mph
S
Mostly Clear
Humidity
84%
Feels like
30°F
Dew Point
26°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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