Areas of Excessive Rainfall and Severe Thunderstorms; Fire Weather Concerns in the Northern Plains and Four Corners Region

Widespread showers and thunderstorms may bring areas of flash flooding across much of the Southern Plains into the Gulf Coast region and the upper Ohio River Valley into the Mid-Atlantic. A large Pacific storm will bring widespread rain, gusty winds, and mountain snow to California and the Great Basin. Fire weather concerns expected in the Northern Plains and the Four Corners region. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Partly Cloudy

46°F

8°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 29.75 in (1007.45 mb)
Dewpoint 46°F (8°C)
Visibility 9.00 mi
Last update 27 May 05:00 AM PDT
Extended Forecast for

3 Miles NNW Lake Berryessa CA

  • Today

    Today: A 30 percent chance of rain, mainly after 3pm.  Increasing clouds, with a high near 71. Calm wind becoming south around 5 mph in the afternoon.

    High: 71 °F

    Mostly Sunny
    then Chance
    Rain

  • Tonight

    Tonight: A 30 percent chance of rain, mainly between 8pm and 9pm.  Patchy fog after 5am.  Otherwise, mostly cloudy, with a low around 50. South wind around 5 mph becoming calm  in the evening.

    Low: 50 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday

    Thursday: A 20 percent chance of rain.  Partly sunny, with a high near 74. Calm wind becoming southwest around 5 mph in the afternoon.  New precipitation amounts of less than a tenth of an inch possible.

    High: 74 °F

    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 51. Southwest wind 5 to 8 mph becoming calm  after midnight. Winds could gust as high as 18 mph.

    Low: 51 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 76. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Patchy fog after 5am.  Otherwise, mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 7am.  Otherwise, sunny, with a high near 82.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 52.

    Low: 52 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Today
A 30 percent chance of rain, mainly after 3pm. Increasing clouds, with a high near 71. Calm wind becoming south around 5 mph in the afternoon.
Tonight
A 30 percent chance of rain, mainly between 8pm and 9pm. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 50. South wind around 5 mph becoming calm in the evening.
Thursday
A 20 percent chance of rain. Partly sunny, with a high near 74. Calm wind becoming southwest around 5 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Partly cloudy, with a low around 51. Southwest wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 18 mph.
Friday
Mostly sunny, with a high near 76. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 52.
Saturday
Patchy fog before 7am. Otherwise, sunny, with a high near 82.
Saturday Night
Clear, with a low around 52.
Sunday
Sunny, with a high near 86.
Sunday Night
Clear, with a low around 56.
Monday
Sunny, with a high near 90.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Lake Berryessa CA
 38.61°N 122.28°W (Elev. 554 ft)
2:36 am PDT May 27, 2026
5am PDT May 27, 2026-6pm PDT Jun 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database