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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

68°F

20°C

Humidity 68%
Wind Speed SSE 3 MPH
Barometer 29.85 in (1010.84 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 20 Mar 08:20 PM PDT
Extended Forecast for

3 Miles SW Napa CA

  • Tonight

    Tonight: Mostly clear, with a low around 53. Light south wind.

    Low: 53 °F

    Mostly Clear

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 82. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 82 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 48. West wind 5 to 8 mph becoming calm after midnight.

    Low: 48 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 47. West southwest wind around 6 mph becoming calm in the evening.

    Low: 47 °F

    Mostly Clear
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 9am. Otherwise, sunny, with a high near 79.

    High: 79 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 53. Light south wind.
Saturday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 82. Calm wind becoming west 5 to 9 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 48. West wind 5 to 8 mph becoming calm after midnight.
Sunday
Sunny, with a high near 78. Calm wind becoming west southwest around 5 mph in the afternoon.
Sunday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 47. West southwest wind around 6 mph becoming calm in the evening.
Monday
Patchy fog before 9am. Otherwise, sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 51.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 52.
Friday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Napa CA
 38.26°N 122.34°W (Elev. 157 ft)
Last Update:
8:21 pm PDT Mar 20, 2026
Forecast Valid:
8pm PDT Mar 20, 2026-6pm PDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

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