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.

Clear

54°F

12°C

Humidity 87%
Wind Speed N 3 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 15 Mar 01:00 AM PDT
Extended Forecast for

4 Miles SW Yountville 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 8 mph.

    Low: 56 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 80. North wind 7 to 9 mph.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 59. North wind around 6 mph.

    Low: 59 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 83. Northwest wind around 6 mph.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 62. North northwest wind 3 to 5 mph.

    Low: 62 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 56. North wind around 8 mph.
Sunday
Sunny, with a high near 80. North wind 7 to 9 mph.
Sunday Night
Partly cloudy, with a low around 59. North wind around 6 mph.
Monday
Sunny, with a high near 83. Northwest wind around 6 mph.
Monday Night
Clear, with a low around 62. North northwest wind 3 to 5 mph.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 87.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Sunny, with a high near 80.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Yountville CA
 38.36°N 122.42°W (Elev. 1798 ft)
1:26 pm PDT Mar 14, 2026
1am PDT Mar 15, 2026-6pm PDT Mar 21, 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