Dangerous Heat Builds and Expands; Critical Fire Weather for the Southwest; Severe Thunderstorms for Plains and Midwest

Dangerous to record breaking heat will build across the center of the nation and slowly build eastward this week. Wildfire conditions remain critical for the Southwest and portions of the Great Basin through Monday. For the northern Plains and upper Midwest, severe thunderstorms with the potential for large to very large hail and severe winds are the primary hazards. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

59°F

15°C

Humidity 77%
Wind Speed SW 9 MPH
Barometer 29.83 in (1010.16 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 29 Jun 01:35 AM PDT
Extended Forecast for

7 Miles SW Lake Berryessa CA

  • Overnight

    Overnight: Mostly clear, with a low around 54. Calm wind.

    Low: 54 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 83. Calm wind becoming west 5 to 7 mph in the morning.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 54. West wind around 6 mph becoming calm  in the evening.

    Low: 54 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79. Calm wind becoming south southwest 5 to 8 mph in the afternoon.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 5am.  Otherwise, mostly clear, with a low around 50. Southwest wind 5 to 8 mph becoming calm  after midnight.

    Low: 50 °F

    Clear then
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 8am.  Otherwise, sunny, with a high near 80.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 5am.  Otherwise, mostly clear, with a low around 50.

    Low: 50 °F

    Clear then
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am.  Otherwise, sunny, with a high near 77.

    High: 77 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 2am.  Otherwise, mostly clear, with a low around 50.

    Low: 50 °F

    Clear then
    Patchy Fog

Detailed Forecast

Overnight
Mostly clear, with a low around 54. Calm wind.
Monday
Sunny, with a high near 83. Calm wind becoming west 5 to 7 mph in the morning.
Monday Night
Mostly clear, with a low around 54. West wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 79. Calm wind becoming south southwest 5 to 8 mph in the afternoon.
Tuesday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 50. Southwest wind 5 to 8 mph becoming calm after midnight.
Wednesday
Patchy fog before 8am. Otherwise, sunny, with a high near 80.
Wednesday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 50.
Thursday
Patchy fog before 9am. Otherwise, sunny, with a high near 77.
Thursday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 50.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 82.
Friday Night
Patchy fog. Otherwise, mostly clear, with a low around 53.
Independence Day
Sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 53.
Sunday
Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SW Lake Berryessa CA
 38.51°N 122.34°W (Elev. 699 ft)
1:26 am PDT Jun 29, 2026
1am PDT Jun 29, 2026-6pm PDT Jul 5, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database