National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tracking Weekend Storm Impacts

A storm and trailing cold front will continue to slowly move through the Gulf Coast and Southeast U.S. through this weekend with widespread rain showers and isolated thunderstorms. A fast-moving clipper storm may bring several inches of snow to the north-central Plains, Midwest, eastern Great Lakes, and Northeast regions this weekend. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Mist

45°F

7°C

Humidity 93%
Wind Speed NE 3 MPH
Barometer 30.23 in (1023.71 mb)
Dewpoint 43°F (6°C)
Visibility 3.00 mi
Last update 06 Dec 10:35 AM PST
Extended Forecast for

3 Miles N Hercules CA

  • Today

    Today: Mostly sunny, with a high near 54. East wind 5 to 7 mph becoming calm in the afternoon.

    High: 54 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog between 2am and 3am. Otherwise, partly cloudy, with a low around 44. East southeast wind around 5 mph becoming calm in the evening.

    Low: 44 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 11am. Otherwise, partly sunny, with a high near 55. Calm wind.

    High: 55 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 45. Light and variable wind.

    Low: 45 °F

    Patchy Fog

  • Monday

    Monday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 58. Light and variable wind.

    High: 58 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Patchy fog after midnight. Otherwise, partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog between 10pm and 1am. Otherwise, partly cloudy, with a low around 48.

    Low: 48 °F

    Patchy Fog

  • Wednesday

    Wednesday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 54. East wind 5 to 7 mph becoming calm in the afternoon.
Tonight
Patchy fog between 2am and 3am. Otherwise, partly cloudy, with a low around 44. East southeast wind around 5 mph becoming calm in the evening.
Sunday
Patchy fog before 11am. Otherwise, partly sunny, with a high near 55. Calm wind.
Sunday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 45. Light and variable wind.
Monday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 58. Light and variable wind.
Monday Night
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 46.
Tuesday
Partly sunny, with a high near 59.
Tuesday Night
Patchy fog between 10pm and 1am. Otherwise, partly cloudy, with a low around 48.
Wednesday
Mostly sunny, with a high near 62.
Wednesday Night
Patchy fog between midnight and 1am. Otherwise, partly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 62.
Thursday Night
Patchy fog. Otherwise, mostly clear, with a low around 47.
Friday
Mostly sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Hercules CA
 38.05°N 122.25°W (Elev. 56 ft)
Last Update:
2:54 am PST Dec 6, 2025
Forecast Valid:
10am PST Dec 6, 2025-6pm PST Dec 12, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation