Severe Weather and Heavy Rainfall Potential for the Plains; Coastal Low Across the mid-Atlantic

An upper trough and frontal boundary will focus showers and thunderstorms across portions of the Plains through early Monday; A few severe thunderstorms along with heavy rainfall are expected. Meanwhile, low pressure off the Southeast Coast will bring inclement weather across the mid-Atlantic coast through Monday. This system is forecast to meander off the coast then track inland early this week. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Overcast

61°F

16°C

Humidity 96%
Wind Speed SW 8 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 15 Sep 01:54 AM PDT
Extended Forecast for

Sonoma CA

  • Overnight

    Overnight: Patchy fog before 3am, then patchy fog after 4am.  Otherwise, partly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Patchy Fog

  • Monday

    Monday: Patchy fog before 8am.  Otherwise, sunny, with a high near 92. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 92 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Clear, with a low around 58. Calm wind.

    Low: 58 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 56. West southwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 56 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 84.

    High: 84 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers, then a chance of showers and thunderstorms after 11pm.  Mostly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers

Detailed Forecast

Overnight
Patchy fog before 3am, then patchy fog after 4am. Otherwise, partly cloudy, with a low around 55. Calm wind.
Monday
Patchy fog before 8am. Otherwise, sunny, with a high near 92. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Monday Night
Clear, with a low around 58. Calm wind.
Tuesday
Sunny, with a high near 93. Calm wind becoming south southwest around 6 mph in the afternoon.
Tuesday Night
Clear, with a low around 56. West southwest wind 5 to 8 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
Partly sunny, with a high near 84.
Thursday Night
A slight chance of showers, then a chance of showers and thunderstorms after 11pm. Mostly cloudy, with a low around 58.
Friday
A slight chance of showers. Mostly sunny, with a high near 82.
Friday Night
A slight chance of showers. Patchy fog. Otherwise, partly cloudy, with a low around 57.
Saturday
A slight chance of showers. Patchy fog. Otherwise, sunny, with a high near 82.
Saturday Night
Patchy fog. Otherwise, mostly clear, with a low around 56.
Sunday
Patchy fog. Otherwise, sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
Sonoma CA
 38.29°N 122.46°W (Elev. 72 ft)
1:27 am PDT Sep 15, 2025
2am PDT Sep 15, 2025-6pm PDT Sep 21, 2025
 
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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