Hourly Weather Forecast - Portola, CA

12 AM
42°F
70%
11mph
SW
70% Chance of Rain
Humidity
98%
Feels like
35°F
Dew Point
41°F
1 AM
42°F
80%
11mph
SW
80% Chance of Rain
Humidity
98%
Feels like
35°F
Dew Point
41°F
2 AM
42°F
90%
11mph
WSW
Rain
Humidity
99%
Feels like
35°F
Dew Point
42°F
3 AM
42°F
90%
12mph
WSW
Rain
Humidity
98%
Feels like
35°F
Dew Point
41°F
4 AM
42°F
70%
13mph
WSW
70% Chance of Rain
Humidity
99%
Feels like
35°F
Dew Point
42°F
5 AM
42°F
60%
12mph
WSW
60% Chance Rain Showers
Humidity
100%
Feels like
36°F
Dew Point
42°F
6 AM
42°F
50%
12mph
WSW
50% Chance Rain Showers
Humidity
100%
Feels like
36°F
Dew Point
42°F
7 AM
43°F
40%
12mph
WSW
40% Chance of Light Rain
Humidity
94%
Feels like
37°F
Dew Point
42°F
7:17 AM
8 AM
46°F
30%
12mph
WSW
30% Chance of Light Rain
Humidity
96%
Feels like
40°F
Dew Point
44°F
9 AM
49°F
30%
12mph
WSW
30% Chance Rain Showers
Humidity
88%
Feels like
44°F
Dew Point
45°F
10 AM
51°F
20%
13mph
WSW
Partly Cloudy
Humidity
80%
Feels like
51°F
Dew Point
45°F
11 AM
52°F
10%
13mph
WSW
Partly Cloudy
Humidity
76%
Feels like
52°F
Dew Point
45°F
12 PM
53°F
10%
13mph
WSW
Partly Cloudy
Humidity
70%
Feels like
53°F
Dew Point
44°F
1 PM
54°F
10%
13mph
WSW
Partly Cloudy
Humidity
66%
Feels like
54°F
Dew Point
43°F
2 PM
54°F
0%
12mph
WSW
Partly Cloudy
Humidity
60%
Feels like
54°F
Dew Point
40°F
3 PM
51°F
0%
10mph
WSW
Partly Cloudy
Humidity
63%
Feels like
51°F
Dew Point
39°F
4 PM
46°F
0%
8mph
WSW
Partly Cloudy
Humidity
75%
Feels like
42°F
Dew Point
38°F
4:38 PM
5 PM
40°F
0%
6mph
WSW
Partly Cloudy
Humidity
87%
Feels like
35°F
Dew Point
36°F
6 PM
36°F
0%
5mph
WSW
Partly Cloudy
Humidity
96%
Feels like
31°F
Dew Point
35°F
7 PM
33°F
0%
4mph
WSW
Foggy
Humidity
100%
Feels like
29°F
Dew Point
33°F
8 PM
32°F
0%
4mph
WSW
Foggy
Humidity
100%
Feels like
28°F
Dew Point
32°F
9 PM
31°F
0%
3mph
W
Foggy
Humidity
100%
Feels like
27°F
Dew Point
31°F
10 PM
30°F
0%
3mph
W
Foggy
Humidity
100%
Feels like
27°F
Dew Point
30°F
11 PM
30°F
0%
2mph
W
Cloudy
Humidity
95%
Feels like
30°F
Dew Point
29°F

Rainfall and Snowfall Totals Through Wednesday

Heavy Rain, Snow, and Winds Wallop Northwest

The atmospheric river this week continues to hit the Pacific Northwest with heavy rain, snow, and high winds.

Wednesday's Weather Outlook

Wednesday'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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