Heavy Rain in the Southern U.S.; Winter Storm to Impact the Northern Mid-Atlantic and Interior Northeast

A storm system stretching from the Tennessee Valley to the Gulf Coast will bring a variety of hazards to the Eastern U.S. through Tuesday. On the south side of the system, heavy rain and thunderstorms will persist across the Southern U.S. Further north, a wintry precipitation mix is expected from the Central Appalachians to the interior Northeast through Tuesday. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

Lat: 38.2075°NLon: 122.27944°WElev: 33.0ft.

Clear

41°F

5°C

Humidity 93%
Wind Speed N 3 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 39°F (4°C)
Visibility 7.00 mi
Last update 02 Dec 02:15 AM PST
Extended Forecast for

3 Miles N Hercules CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 44. East wind around 9 mph.

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 60. East wind around 6 mph becoming calm  in the morning.

    High: 60 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 44. Calm wind becoming east 5 to 8 mph after midnight. Winds could gust as high as 20 mph.

    Low: 44 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 62. Northeast wind 7 to 10 mph, with gusts as high as 21 mph.

    High: 62 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42. Southeast wind 3 to 8 mph.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 44. East wind around 9 mph.
Tuesday
Sunny, with a high near 60. East wind around 6 mph becoming calm in the morning.
Tuesday Night
Partly cloudy, with a low around 44. Calm wind becoming east 5 to 8 mph after midnight. Winds could gust as high as 20 mph.
Wednesday
Mostly sunny, with a high near 62. Northeast wind 7 to 10 mph, with gusts as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 42. Southeast wind 3 to 8 mph.
Thursday
Mostly sunny, with a high near 57.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 61.
Friday Night
Mostly clear, with a low around 46.
Saturday
Sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 47.
Monday
Mostly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Hercules CA
 38.05°N 122.25°W (Elev. 56 ft)
2:17 am PST Dec 2, 2025
2am PST Dec 2, 2025-6pm PST Dec 8, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database