Dangerous Fire Conditions in the Southern High Plains; Severe Weather in the Central Plains and Upper Midwest; Late-Season Mountain Snow

Dry and windy conditions will produce dangerous fire weather conditions across the southern High Plains into the Southwest. Severe storms, including very large hail, strong tornadoes, and winds, are expected in the central Plains into the Upper Midwest. Heavy late-season snow and record cold temperatures are expected in the northern to central Rockies. Heat is spreading across the eastern U.S.. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

52°F

11°C

Humidity 81%
Wind Speed SSW 4 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 17 May 07:20 AM PDT
Extended Forecast for

2 Miles SE Lake Berryessa CA

Wind Advisory May 17, 11:00pm until May 18, 11:00am
Click here for hazard details and duration
Wind Advisory
  • Today

    Today: Sunny, with a high near 72. Breezy, with a north wind 18 to 22 mph, with gusts as high as 34 mph.

    High: 72 °F

    Sunny then
    Sunny and
    Breezy

  • Tonight

    Tonight: Clear, with a low around 58. Breezy, with a north wind 20 to 22 mph, with gusts as high as 37 mph.

    Low: 58 °F

    Clear then
    Clear and
    Breezy

  • Monday

    Monday: Sunny, with a high near 78. North wind 16 to 21 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 34 mph.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 58. North northwest wind 5 to 7 mph.

    Low: 58 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 82. North wind 5 to 8 mph becoming calm  in the afternoon.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 58.

    Low: 58 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 72. Breezy, with a north wind 18 to 22 mph, with gusts as high as 34 mph.
Tonight
Clear, with a low around 58. Breezy, with a north wind 20 to 22 mph, with gusts as high as 37 mph.
Monday
Sunny, with a high near 78. North wind 16 to 21 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 34 mph.
Monday Night
Clear, with a low around 58. North northwest wind 5 to 7 mph.
Tuesday
Sunny, with a high near 82. North wind 5 to 8 mph becoming calm in the afternoon.
Tuesday Night
Clear, with a low around 58.
Wednesday
Sunny, with a high near 84.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Sunny, with a high near 86.
Thursday Night
Clear, with a low around 57.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Lake Berryessa CA
 38.55°N 122.21°W (Elev. 440 ft)
1:34 am PDT May 17, 2026
7am PDT May 17, 2026-6pm PDT May 23, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database