Severe Thunderstorms for the Center of the Nation; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

A round of severe thunderstorms are forecast across areas of the Southern Plains, Mississippi Valley and Great Lakes this afternoon and tonight; The threat for flash flooding will also accompany these storms. The rainfall for the Great Lakes region could prolong the ongoing flooding. Where the rain is needed, the Southern High Plains, critical fire weather concerns through today. 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 22%
Wind Speed N 11 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 17 Apr 10:20 AM PDT
Extended Forecast for

6 Miles SE Lake Berryessa CA

  • Today

    Today: Sunny, with a high near 73. North wind 5 to 8 mph, with gusts as high as 22 mph.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 76. Calm wind.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 49. South southwest wind around 5 mph becoming calm  in the evening.

    Low: 49 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 73. Calm wind becoming south southwest 5 to 7 mph in the afternoon.

    High: 73 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 40 percent chance of rain after 11pm.  Mostly cloudy, with a low around 49. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Chance Rain

  • Monday

    Monday: Rain likely.  Mostly cloudy, with a high near 63. Chance of precipitation is 70%.

    High: 63 °F

    Rain Likely

  • Monday Night

    Monday Night: Rain likely, mainly before 11pm.  Patchy fog after 5am.  Otherwise, mostly cloudy, with a low around 47.

    Low: 47 °F

    Rain Likely
    and Patchy
    Fog

  • Tuesday

    Tuesday: A chance of rain, then showers likely and possibly a thunderstorm after 11am.  Patchy fog before 9am.  Otherwise, mostly cloudy, with a high near 60.

    High: 60 °F

    Showers
    Likely and
    Patchy Fog

Detailed Forecast

Today
Sunny, with a high near 73. North wind 5 to 8 mph, with gusts as high as 22 mph.
Tonight
Partly cloudy, with a low around 46. Calm wind.
Saturday
Mostly sunny, with a high near 76. Calm wind.
Saturday Night
Mostly cloudy, with a low around 49. South southwest wind around 5 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 73. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Sunday Night
A 40 percent chance of rain after 11pm. Mostly cloudy, with a low around 49. New precipitation amounts of less than a tenth of an inch possible.
Monday
Rain likely. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.
Monday Night
Rain likely, mainly before 11pm. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 47.
Tuesday
A chance of rain, then showers likely and possibly a thunderstorm after 11am. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 60.
Tuesday Night
A chance of rain, mainly before 11pm. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 45.
Wednesday
A slight chance of rain. Patchy fog. Otherwise, mostly sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 46.
Thursday
Sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SE Lake Berryessa CA
 38.51°N 122.2°W (Elev. 541 ft)
2:27 am PDT Apr 17, 2026
10am PDT Apr 17, 2026-6pm PDT Apr 23, 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