Critical Fire Weather in the High Plains; Heat Continues in the West

Critical fire weather conditions will persist in the central High Plains through Friday as gusty winds and dry conditions continue. The heat wave across the West and Southwest will continue to intensify through the week, with daily and monthly record highs expected to be broken. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

68°F

20°C

Humidity 72%
Wind Speed N 0 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 18 Mar 08:15 PM PDT
Extended Forecast for

7 Miles SSE Lake Berryessa CA

Heat Advisory March 18, 08:36pm until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 18, 08:36pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Tonight

    Low: 57 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 89. Light north wind.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 60. Calm wind.

    Low: 60 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 91. Calm wind.

    High: 91 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. Light and variable wind.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

Tonight
Clear, with a low around 57. Calm wind.
Thursday
Sunny, with a high near 89. Light north wind.
Thursday Night
Clear, with a low around 60. Calm wind.
Friday
Sunny, with a high near 91. Calm wind.
Friday Night
Mostly clear, with a low around 58. Light and variable wind.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 52.
Monday
Mostly sunny, with a high near 78.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Sunny, with a high near 72.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SSE Lake Berryessa CA
 38.48°N 122.22°W (Elev. 1798 ft)
3:12 pm PDT Mar 18, 2026
8pm PDT Mar 18, 2026-6pm PDT Mar 25, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database