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

Strong Storm System Brings Heavy Mountain Snow to the Sierra Nevada and Critical Fire Weather Conditions to the Plains

A Pacific storm system will continue to bring low elevation rain and mountain snow to much of the West through Wednesday, with heavy mountain snow expected in the higher elevations of the Sierra Nevada. This system will also bring strong winds to the Intermountain West, Rockies, and Plains, which will create Critical fire weather conditions for the High Plains. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Partly Cloudy

55°F

13°C

Humidity 71%
Wind Speed W 11 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 21 Apr 07:35 PM PDT
Extended Forecast for

5 Miles W Napa Co. Airport CA

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely after 3am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 43. West southwest wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 43 °F

    Showers
    Likely and
    Patchy Fog

  • Wednesday

    Wednesday: A 40 percent chance of showers, mainly before 11am. Patchy fog before 10am. Otherwise, mostly sunny, with a high near 64. Calm wind becoming southwest 5 to 7 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Chance
    Showers and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 41. West wind 5 to 7 mph becoming calm in the evening.

    Low: 41 °F

    Mostly Clear
    then Patchy
    Fog

  • Thursday

    Thursday: Areas of fog before 9am. Otherwise, sunny, with a high near 70. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 70 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 44. West wind 5 to 8 mph becoming calm in the evening.

    Low: 44 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Areas of fog before 9am. Otherwise, mostly sunny, with a high near 69.

    High: 69 °F

    Areas Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 64.

    High: 64 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers likely after 3am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 43. West southwest wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 40 percent chance of showers, mainly before 11am. Patchy fog before 10am. Otherwise, mostly sunny, with a high near 64. Calm wind becoming southwest 5 to 7 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 41. West wind 5 to 7 mph becoming calm in the evening.
Thursday
Areas of fog before 9am. Otherwise, sunny, with a high near 70. Calm wind becoming west southwest around 6 mph in the afternoon.
Thursday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 44. West wind 5 to 8 mph becoming calm in the evening.
Friday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 69.
Friday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 47.
Saturday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Mostly sunny, with a high near 66.
Sunday Night
Patchy fog. Otherwise, mostly clear, with a low around 44.
Monday
Patchy fog. Otherwise, mostly sunny, with a high near 68.
Monday Night
Patchy fog. Otherwise, partly cloudy, with a low around 45.
Tuesday
A slight chance of rain. Patchy fog. Otherwise, mostly sunny, with a high near 69.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Napa Co. Airport CA
 38.21°N 122.38°W (Elev. 3 ft)
Last Update:
2:36 pm PDT Apr 21, 2026
Forecast Valid:
7pm PDT Apr 21, 2026-6pm PDT Apr 28, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation