Tracking a Winter Storm; Unusual Early-Season Heat Wave in the Southwest

A major winter storm will organize across the Northern Plains today and then rapidly strengthen as it moves into the Great Lakes on Sunday. Heavy snow and blowing snow are likely to persist over the Great Lakes into Monday night. Dry and gusty winds will produce a critical fire risk across the central/southern Plains. An early heatwave will begin to intensify over the western U.S. into next week. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Mist

48°F

9°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 48°F (9°C)
Visibility 5.00 mi
Last update 15 Mar 03:13 AM PDT
Extended Forecast for

8 Miles WNW Vacaville CA

Heat Advisory March 16, 10:00am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • Overnight

    Overnight: Clear, with a low around 56. North wind around 10 mph, with gusts as high as 23 mph.

    Low: 56 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 79. North wind 9 to 14 mph, with gusts as high as 26 mph.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61. North wind around 8 mph, with gusts as high as 18 mph.

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 83. North wind 6 to 8 mph.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 61. North northwest wind around 5 mph becoming light and variable  after midnight.

    Low: 61 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 63.

    Low: 63 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 64.

    Low: 64 °F

    Clear

Detailed Forecast

Overnight
Clear, with a low around 56. North wind around 10 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 79. North wind 9 to 14 mph, with gusts as high as 26 mph.
Sunday Night
Mostly clear, with a low around 61. North wind around 8 mph, with gusts as high as 18 mph.
Monday
Sunny, with a high near 83. North wind 6 to 8 mph.
Monday Night
Clear, with a low around 61. North northwest wind around 5 mph becoming light and variable after midnight.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Clear, with a low around 63.
Wednesday
Sunny, with a high near 84.
Wednesday Night
Clear, with a low around 64.
Thursday
Sunny, with a high near 85.
Thursday Night
Clear, with a low around 65.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 82.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
8 Miles WNW Vacaville CA
 38.39°N 122.11°W (Elev. 1365 ft)
2:40 am PDT Mar 15, 2026
3am PDT Mar 15, 2026-6pm PDT Mar 21, 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