Hourly Weather Forecast - Napa, CA

12 AM
45°F
0%
6mph
W
Foggy
Humidity
100%
Feels like
41°F
Dew Point
45°F
1 AM
45°F
0%
6mph
W
Foggy
Humidity
100%
Feels like
41°F
Dew Point
45°F
2 AM
45°F
0%
6mph
W
Foggy
Humidity
100%
Feels like
41°F
Dew Point
45°F
3 AM
45°F
0%
6mph
W
Foggy
Humidity
100%
Feels like
41°F
Dew Point
45°F
4 AM
45°F
0%
6mph
W
Foggy
Humidity
100%
Feels like
42°F
Dew Point
45°F
5 AM
45°F
10%
6mph
W
Foggy
Humidity
100%
Feels like
42°F
Dew Point
45°F
6 AM
46°F
10%
6mph
W
Foggy
Humidity
100%
Feels like
43°F
Dew Point
46°F
7 AM
46°F
10%
6mph
WSW
Foggy
Humidity
99%
Feels like
43°F
Dew Point
46°F
7:20 AM
8 AM
47°F
10%
6mph
WSW
Mostly Cloudy
Humidity
98%
Feels like
44°F
Dew Point
46°F
9 AM
48°F
10%
6mph
WSW
Mostly Cloudy
Humidity
97%
Feels like
45°F
Dew Point
47°F
10 AM
49°F
10%
6mph
WSW
Partly Cloudy
Humidity
95%
Feels like
46°F
Dew Point
47°F
11 AM
51°F
10%
7mph
WSW
Partly Cloudy
Humidity
91%
Feels like
51°F
Dew Point
48°F
12 PM
52°F
10%
8mph
WSW
Partly Cloudy
Humidity
87%
Feels like
52°F
Dew Point
49°F
1 PM
54°F
10%
8mph
WSW
Partly Cloudy
Humidity
84%
Feels like
54°F
Dew Point
49°F
2 PM
54°F
10%
9mph
WSW
Partly Cloudy
Humidity
84%
Feels like
54°F
Dew Point
49°F
3 PM
53°F
10%
9mph
SW
Partly Cloudy
Humidity
86%
Feels like
53°F
Dew Point
49°F
4 PM
52°F
10%
9mph
SW
Partly Cloudy
Humidity
91%
Feels like
52°F
Dew Point
49°F
4:50 PM
5 PM
50°F
10%
8mph
SW
Partly Cloudy
Humidity
95%
Feels like
50°F
Dew Point
49°F
6 PM
48°F
10%
7mph
SW
Foggy
Humidity
99%
Feels like
45°F
Dew Point
48°F
7 PM
47°F
10%
7mph
SW
Foggy
Humidity
100%
Feels like
44°F
Dew Point
47°F
8 PM
46°F
10%
7mph
WSW
Foggy
Humidity
100%
Feels like
43°F
Dew Point
46°F
9 PM
46°F
10%
6mph
WSW
Foggy
Humidity
100%
Feels like
43°F
Dew Point
46°F
10 PM
46°F
10%
6mph
WSW
Foggy
Humidity
100%
Feels like
43°F
Dew Point
46°F
11 PM
46°F
10%
6mph
WSW
Foggy
Humidity
100%
Feels like
43°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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