Significant and High Impact Severe Weather Event is Underway

A powerful spring storm continues across the country with multiple high impacts in the forecast. Life-threatening, catastrophic, and potentially historic flash flood event continues across the Lower Ohio Valley and Mid-South. A couple rounds of significant severe weather expected from the Mid-South through the Ozarks and ArkLaTex with very large hail and strong tornadoes possible. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

43°F

6°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 03 Apr 08:05 AM PDT
Extended Forecast for

4 Miles SE Saint Helena CA

Frost Advisory until April 3, 09:00am
Click here for hazard details and duration
...
  •  
    Frost Advisory until April 3, 09:00am

    NOW until 9:00am Thu

    Frost Advisory

  • Today

    High: 67 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 42. Calm wind.

    Low: 42 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 73. Calm wind becoming north around 5 mph in the afternoon.

    High: 73 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 45. Light north northwest wind.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 76. Calm wind.

    High: 76 °F

    Sunny

  • Saturday Night

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

    Low: 46 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of rain.  Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 49.

    Low: 49 °F

    Chance Rain
    and Patchy
    Fog

Detailed Forecast

Today
Sunny, with a high near 67. Light and variable wind.
Tonight
Clear, with a low around 42. Calm wind.
Friday
Sunny, with a high near 73. Calm wind becoming north around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 45. Light north northwest wind.
Saturday
Sunny, with a high near 76. Calm wind.
Saturday Night
Mostly clear, with a low around 46.
Sunday
Mostly sunny, with a high near 73.
Sunday Night
A chance of rain. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 49.
Monday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
Sunny, with a high near 78.
Click Map For Forecast

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Saint Helena CA
 38.45°N 122.41°W (Elev. 157 ft)
1:26 am PDT Apr 3, 2025
8am PDT Apr 3, 2025-6pm PDT Apr 9, 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