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

Storm Systems to Impact the Central and Eastern U.S. Through the Weekend

Two storm systems will track through the central and eastern U.S. today through this weekend with areas of gusty winds, rain and heavy snow. Severe thunderstorms and heavy to excessive rainfall is forecast today from the Lower Mississippi River Valley to the Tennessee Valley. Damaging winds, a few tornadoes, and areas of flooding are possible. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

46°F

8°C

Humidity 70%
Wind Speed SE 3 MPH
Barometer 30.44 in (1030.82 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 09 Jan 08:00 PM PST
Extended Forecast for

Napa CA

Cold Weather Advisory January 10, 01:00am until January 10, 09:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Tonight

    Tonight: Areas of frost between 4am and 5am. Otherwise, partly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Clear
    then Areas
    Frost

  • Saturday

    Saturday: Partly sunny, with a high near 56. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 56 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Patchy frost after 5am. Otherwise, mostly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Cloudy
    then Patchy
    Frost

  • Sunday

    Sunday: Areas of frost before 8am. Otherwise, mostly sunny, with a high near 58. Calm wind.

    High: 58 °F

    Areas Frost
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog before midnight, then patchy fog after 5am. Otherwise, mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Patchy Fog

  • Monday

    Monday: Patchy fog before 10am. Patchy frost before 7am. Otherwise, sunny, with a high near 58.

    High: 58 °F

    Patchy Frost
    and Patchy
    Fog then
    Sunny

  • Monday Night

    Monday Night: Patchy fog after 3am. Otherwise, mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 10am. Otherwise, sunny, with a high near 60.

    High: 60 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog before midnight, then patchy fog after 3am. Otherwise, mostly clear, with a low around 41.

    Low: 41 °F

    Patchy Fog

Detailed Forecast

Tonight
Areas of frost between 4am and 5am. Otherwise, partly cloudy, with a low around 36. Calm wind.
Saturday
Partly sunny, with a high near 56. Calm wind becoming northeast around 5 mph in the afternoon.
Saturday Night
Patchy frost after 5am. Otherwise, mostly cloudy, with a low around 36. Calm wind.
Sunday
Areas of frost before 8am. Otherwise, mostly sunny, with a high near 58. Calm wind.
Sunday Night
Patchy fog before midnight, then patchy fog after 5am. Otherwise, mostly clear, with a low around 36. Calm wind.
Monday
Patchy fog before 10am. Patchy frost before 7am. Otherwise, sunny, with a high near 58.
Monday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 39.
Tuesday
Patchy fog before 10am. Otherwise, sunny, with a high near 60.
Tuesday Night
Patchy fog before midnight, then patchy fog after 3am. Otherwise, mostly clear, with a low around 41.
Wednesday
Patchy fog before 10am. Otherwise, sunny, with a high near 62.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 64.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 63.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Napa CA
 38.29°N 122.29°W (Elev. 20 ft)
Last Update:
1:09 pm PST Jan 9, 2026
Forecast Valid:
8pm PST Jan 9, 2026-6pm PST Jan 16, 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