Tracking Late Season Winter Storms; Unusual Early-Season Heat Wave in the Southwest

Heavy snow and high winds continue in the Great Lakes and Northeast. A moderate atmospheric river will continue to bring heavy precipitation to the Pacific Northwest and northern Rockies. A major winter storm will develop across the northern High Plains tonight into Saturday and rapidly strengthen as it moves into the Great Lakes on Sunday. Above-average temperatures expected in the Southwest. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

64°F

18°C

Humidity 55%
Wind Speed SW 3 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 13 Mar 12:20 PM PDT
Extended Forecast for

3 Miles SSE Lake Berryessa CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 77. Light and variable wind.

    High: 77 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 49. Calm wind.

    Low: 49 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 79. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 55. Calm wind becoming north northwest around 5 mph after midnight.

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 84. North wind around 8 mph, with gusts as high as 21 mph.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 59.

    Low: 59 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 77. Light and variable wind.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 49. Calm wind.
Saturday
Sunny, with a high near 79. Calm wind becoming northwest around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 55. Calm wind becoming north northwest around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 84. North wind around 8 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Sunny, with a high near 89.
Monday Night
Clear, with a low around 59.
Tuesday
Sunny, with a high near 90.
Tuesday Night
Clear, with a low around 60.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Clear, with a low around 61.
Thursday
Sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Lake Berryessa CA
 38.53°N 122.23°W (Elev. 991 ft)
11:28 am PDT Mar 13, 2026
12pm PDT Mar 13, 2026-6pm PDT Mar 19, 2026
 
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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