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

Thunderstorms and Widespread Rainfall Across the Southern Plains

Isolated severe thunderstorms and widespread showers may produce flash flooding across the Southern Plains through Thursday. Numerous instances of flash flooding are expected in south-central Texas, including portions of the Hill Country; and an additional area across eastern Oklahoma into the Ozarks on Thursday. Heavy rainfall and mountain snow will return to southern California on Thursday. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

light rain,mist

54°F

12°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 52°F (11°C)
Visibility 6.00 mi
Last update 20 Nov 12:35 AM PST
Extended Forecast for

Sonoma CA

  • Overnight

    Overnight: Rain, mainly before 4am. Patchy fog. Low around 47. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 47 °F

    Rain and
    Patchy Fog

  • Thursday

    Thursday: A 50 percent chance of rain, mainly before 10am. Mostly sunny, with a high near 60. Calm wind becoming northwest around 6 mph in the morning. New precipitation amounts of less than a tenth of an inch possible.

    High: 60 °F

    Chance Rain
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 40. Northwest wind around 5 mph becoming calm after midnight.

    Low: 40 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 65. Calm wind becoming north around 5 mph in the morning.

    High: 65 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Areas of fog before 10am. Otherwise, sunny, with a high near 64.

    High: 64 °F

    Areas Fog
    then Sunny

  • Sunday Night

    Sunday Night: Patchy fog after midnight. Otherwise, partly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Clear
    then Patchy
    Fog

Detailed Forecast

Overnight
Rain, mainly before 4am. Patchy fog. Low around 47. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
A 50 percent chance of rain, mainly before 10am. Mostly sunny, with a high near 60. Calm wind becoming northwest around 6 mph in the morning. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Mostly clear, with a low around 40. Northwest wind around 5 mph becoming calm after midnight.
Friday
Sunny, with a high near 65. Calm wind becoming north around 5 mph in the morning.
Friday Night
Mostly clear, with a low around 41. Calm wind.
Saturday
Sunny, with a high near 65.
Saturday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 42.
Sunday
Areas of fog before 10am. Otherwise, sunny, with a high near 64.
Sunday Night
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 42.
Monday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 64.
Monday Night
Patchy fog. Otherwise, partly cloudy, with a low around 43.
Tuesday
Patchy fog. Otherwise, mostly sunny, with a high near 64.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
Sonoma CA
 38.29°N 122.46°W (Elev. 72 ft)
Last Update:
12:26 am PST Nov 20, 2025
Forecast Valid:
12am PST Nov 20, 2025-6pm PST Nov 26, 2025
 
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Additional Resources

Radar & Satellite Image

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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