Critical Fire Weather in the Southern High Plains; Heavy Snow in the Great Lakes and Northeast U.S.

Gusty winds and low relative humidity will bring elevated to critical fire weather conditions to the southern High Plains through the weekend. A winter storm will track across the Great Lakes and Northeast U.S. into Saturday with areas of wintry mix and heavy snow from northern New York through southern Maine. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

49°F

9°C

Humidity 63%
Wind Speed ESE 8 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 20 Feb 11:54 AM PST
Extended Forecast for

3 Miles NNW Vallejo CA

Cold Weather Advisory February 21, 01:00am until February 21, 09:00am
Click here for hazard details and duration
Cold Weather Advisory
  • This Afternoon

    This Afternoon: Partly sunny, with a high near 50. Southeast wind around 6 mph.

    High: 50 °F

    Partly Sunny

  • Tonight

    Tonight: Patchy frost between 1am and 2am.  Otherwise, increasing clouds, with a low around 35. East wind 3 to 6 mph.

    Low: 35 °F

    Mostly Clear
    then Patchy
    Frost

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 56. East wind 9 to 17 mph becoming south in the afternoon. Winds could gust as high as 25 mph.

    High: 56 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: A 30 percent chance of rain, mainly after 4am.  Increasing clouds, with a low around 44. Southeast wind around 15 mph, with gusts as high as 23 mph.

    Low: 44 °F

    Chance Rain

  • Sunday

    Sunday: A 30 percent chance of rain, mainly before 10am.  Mostly cloudy, with a high near 62. South wind 13 to 15 mph.

    High: 62 °F

    Chance Rain

  • Sunday Night

    Sunday Night: A 20 percent chance of rain before 10pm.  Mostly cloudy, with a low around 46.

    Low: 46 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of rain after 4pm.  Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy
    then Chance
    Rain

  • Monday Night

    Monday Night: Rain likely, mainly after 10pm.  Cloudy, with a low around 53.

    Low: 53 °F

    Rain Likely

  • Tuesday

    Tuesday: Rain.  Cloudy, with a high near 58.

    High: 58 °F

    Rain

Detailed Forecast

This Afternoon
Partly sunny, with a high near 50. Southeast wind around 6 mph.
Tonight
Patchy frost between 1am and 2am. Otherwise, increasing clouds, with a low around 35. East wind 3 to 6 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 56. East wind 9 to 17 mph becoming south in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
A 30 percent chance of rain, mainly after 4am. Increasing clouds, with a low around 44. Southeast wind around 15 mph, with gusts as high as 23 mph.
Sunday
A 30 percent chance of rain, mainly before 10am. Mostly cloudy, with a high near 62. South wind 13 to 15 mph.
Sunday Night
A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 46.
Monday
A 30 percent chance of rain after 4pm. Mostly cloudy, with a high near 62.
Monday Night
Rain likely, mainly after 10pm. Cloudy, with a low around 53.
Tuesday
Rain. Cloudy, with a high near 58.
Tuesday Night
Rain likely, mainly before 10pm. Cloudy, with a low around 52.
Wednesday
A chance of rain. Mostly cloudy, with a high near 61.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 49.
Thursday
A chance of rain. Partly sunny, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Vallejo CA
 38.18°N 122.26°W (Elev. 56 ft)
11:40 am PST Feb 20, 2026
12pm PST Feb 20, 2026-6pm PST Feb 26, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database