Hourly Weather Forecast - Napa, CA

12 AM
44°F
10%
6mph
SSE
Cloudy
Humidity
98%
Feels like
40°F
Dew Point
43°F
1 AM
44°F
10%
6mph
SE
Foggy
Humidity
99%
Feels like
40°F
Dew Point
44°F
2 AM
44°F
10%
6mph
SE
Foggy
Humidity
99%
Feels like
40°F
Dew Point
44°F
3 AM
44°F
10%
6mph
E
Foggy
Humidity
100%
Feels like
41°F
Dew Point
44°F
4 AM
44°F
10%
6mph
ENE
Foggy
Humidity
100%
Feels like
41°F
Dew Point
44°F
5 AM
44°F
10%
6mph
NE
Foggy
Humidity
100%
Feels like
41°F
Dew Point
44°F
6 AM
45°F
10%
6mph
NNE
Foggy
Humidity
99%
Feels like
42°F
Dew Point
45°F
7 AM
46°F
10%
6mph
NNE
Foggy
Humidity
99%
Feels like
42°F
Dew Point
45°F
7:19 AM
8 AM
46°F
10%
6mph
NNW
Cloudy
Humidity
97%
Feels like
43°F
Dew Point
45°F
9 AM
47°F
10%
5mph
NNW
Cloudy
Humidity
96%
Feels like
44°F
Dew Point
46°F
10 AM
47°F
10%
5mph
WSW
Cloudy
Humidity
96%
Feels like
45°F
Dew Point
46°F
11 AM
48°F
10%
5mph
SSW
Cloudy
Humidity
96%
Feels like
46°F
Dew Point
47°F
12 PM
49°F
10%
6mph
SW
Cloudy
Humidity
97%
Feels like
47°F
Dew Point
48°F
1 PM
49°F
10%
6mph
S
Foggy
Humidity
99%
Feels like
47°F
Dew Point
49°F
2 PM
49°F
10%
6mph
SSW
Foggy
Humidity
100%
Feels like
47°F
Dew Point
49°F
3 PM
49°F
10%
7mph
SSW
Cloudy
Humidity
98%
Feels like
47°F
Dew Point
49°F
4 PM
50°F
0%
7mph
S
Cloudy
Humidity
97%
Feels like
47°F
Dew Point
49°F
4:50 PM
5 PM
50°F
0%
6mph
SSW
Cloudy
Humidity
95%
Feels like
50°F
Dew Point
49°F
6 PM
50°F
0%
6mph
S
Cloudy
Humidity
96%
Feels like
50°F
Dew Point
49°F
7 PM
50°F
10%
6mph
SSW
Cloudy
Humidity
97%
Feels like
50°F
Dew Point
49°F
8 PM
50°F
20%
6mph
SSW
Foggy
Humidity
99%
Feels like
50°F
Dew Point
50°F
9 PM
50°F
30%
6mph
SW
30% Chance of Light Rain
Humidity
100%
Feels like
50°F
Dew Point
50°F
10 PM
50°F
30%
6mph
SW
30% Chance of Light Rain
Humidity
100%
Feels like
47°F
Dew Point
50°F
11 PM
50°F
40%
7mph
SW
40% Chance of Light Rain
Humidity
100%
Feels like
47°F
Dew Point
50°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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