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

Cold Temperatures Continue in the Southeast; Snow in the Central Appalachians and Ohio Valley; Rain and Thunderstorms in the Southeast

Cold temperatures will persist across Florida and the Southeast through Tuesday, then milder conditions are expected beginning Wednesday. A frontal system is expected to bring wintry precipitation to the Central Appalachians and portions of the Mid-Atlantic Tuesday into Wednesday, meanwhile, showers and thunderstorms are expected along the Gulf Coast and Southeast. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

39°F

4°C

Humidity 100%
Wind Speed ENE 3 MPH
Barometer 30.26 in (1024.72 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 03 Feb 02:00 AM PST
Extended Forecast for

4 Miles E Saint Helena CA

  • Overnight

    Overnight: Clear, with a low around 43. Calm wind.

    Low: 43 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 70. Light north northeast wind.

    High: 70 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 44. Calm wind.

    Low: 44 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 71. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 71 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 43. Calm wind.

    Low: 43 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy
    then Patchy
    Fog

Detailed Forecast

Overnight
Clear, with a low around 43. Calm wind.
Tuesday
Sunny, with a high near 70. Light north northeast wind.
Tuesday Night
Clear, with a low around 44. Calm wind.
Wednesday
Sunny, with a high near 71. Calm wind becoming northeast around 5 mph in the afternoon.
Wednesday Night
Clear, with a low around 43. Calm wind.
Thursday
Sunny, with a high near 69.
Thursday Night
Mostly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 67.
Friday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 66.
Saturday Night
A slight chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 46.
Sunday
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 63.
Sunday Night
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 43.
Monday
A chance of rain. Areas of fog. Otherwise, partly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Saint Helena CA
 38.5°N 122.4°W (Elev. 476 ft)
Last Update:
2:08 am PST Feb 3, 2026
Forecast Valid:
2am PST Feb 3, 2026-6pm PST Feb 9, 2026
 
Forecast Discussion
 
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Additional Resources

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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