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.

Clear

50°F

10°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 29.76 in (1007.79 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 27 May 01:00 AM PDT
Extended Forecast for

9 Miles ESE Lake Berryessa CA

  • Overnight

    Overnight: Mostly clear, with a low around 48. Light west wind.

    Low: 48 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of rain after 1pm.  Increasing clouds, with a high near 68. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 68 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Wednesday Night

    Wednesday Night: A slight chance of rain before 8pm, then a slight chance of rain after 9pm.  Mostly cloudy, with a low around 50. South southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 50 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: A 20 percent chance of rain.  Partly sunny, with a high near 72. Calm wind becoming southwest around 6 mph in the afternoon.  New precipitation amounts of less than a tenth of an inch possible.

    High: 72 °F

    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 51. Southwest wind 3 to 7 mph. Winds could gust as high as 21 mph.

    Low: 51 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 52.

    Low: 52 °F

    Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 48. Light west wind.
Wednesday
A 20 percent chance of rain after 1pm. Increasing clouds, with a high near 68. Calm wind becoming south southwest around 5 mph in the afternoon.
Wednesday Night
A slight chance of rain before 8pm, then a slight chance of rain after 9pm. Mostly cloudy, with a low around 50. South southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Thursday
A 20 percent chance of rain. Partly sunny, with a high near 72. Calm wind becoming southwest around 6 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 3 to 7 mph. Winds could gust as high as 21 mph.
Friday
Mostly sunny, with a high near 73.
Friday Night
Mostly clear, with a low around 52.
Saturday
Sunny, with a high near 79.
Saturday Night
Clear, with a low around 52.
Sunday
Sunny, with a high near 84.
Sunday Night
Clear, with a low around 55.
Monday
Sunny, with a high near 87.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 90.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles ESE Lake Berryessa CA
 38.5°N 122.11°W (Elev. 594 ft)
12:36 am PDT May 27, 2026
1am PDT May 27, 2026-6pm PDT Jun 2, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database