National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Extreme Heat Continues; Severe Thunderstorms into Upper Midwest; Strong Bering Sea Storm

Wildfires and poor air quality continue for the Pacific Northwest, Rockies and extended into the Plains. Severe thunderstorms possible for the northern Plains and upper Midwest on Monday along a frontal boundary. Another boundary will focus showers and thunderstorms for the eastern seaboard with localized heavy rainfall possible. For Alaska, a strong Bering Sea storm will bring winds and rainfall. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

81°F

27°C

Humidity 47%
Wind Speed S 8 MPH
Barometer 29.74 in (1007.11 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 02 Aug 06:35 PM PDT
Extended Forecast for

3 Miles SSE Lake Berryessa CA

  • Tonight

    Tonight: Patchy smoke between midnight and 4am. Clear, with a low around 66. West southwest wind 5 to 9 mph becoming calm after midnight.

    Low: 66 °F

    Clear then
    Patchy Smoke

  • Monday

    Monday: Sunny and hot, with a high near 101. Calm wind becoming north 5 to 7 mph in the morning.

    High: 101 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 63. West southwest wind around 6 mph becoming calm in the evening.

    Low: 63 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 98. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 98 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 59. West southwest wind 3 to 8 mph.

    Low: 59 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 59.

    Low: 59 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

Detailed Forecast

Tonight
Patchy smoke between midnight and 4am. Clear, with a low around 66. West southwest wind 5 to 9 mph becoming calm after midnight.
Monday
Sunny and hot, with a high near 101. Calm wind becoming north 5 to 7 mph in the morning.
Monday Night
Clear, with a low around 63. West southwest wind around 6 mph becoming calm in the evening.
Tuesday
Sunny and hot, with a high near 98. Calm wind becoming south southwest around 6 mph in the afternoon.
Tuesday Night
Clear, with a low around 59. West southwest wind 3 to 8 mph.
Wednesday
Sunny and hot, with a high near 96.
Wednesday Night
Clear, with a low around 59.
Thursday
Sunny and hot, with a high near 96.
Thursday Night
Clear, with a low around 61.
Friday
Sunny and hot, with a high near 100.
Friday Night
Clear, with a low around 65.
Saturday
Sunny and hot, with a high near 99.
Saturday Night
Clear, with a low around 63.
Sunday
Sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Lake Berryessa CA
 38.53°N 122.23°W (Elev. 991 ft)
Last Update:
1:26 pm PDT Aug 2, 2026
Forecast Valid:
6pm PDT Aug 2, 2026-6pm PDT Aug 9, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation