Heavy Rainfall Threat for Mid-Atlantic into Southern New England; Fire Weather Hazards for the West

Heavy rain and isolated severe thunderstorms may cause flash flooding in the northern Mid-Atlantic today. The Mid-Atlantic and Southeast heatwave is slowly easing, while cooler, drier air spreads across the Central and Eastern U.S. for the start of August. Critical fire conditions persist in the Pacific Northwest and Four Corners due to dry storms and gusty winds. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Overcast

57°F

14°C

Humidity 93%
Wind Speed S 11 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 31 Jul 03:35 AM PDT
Extended Forecast for

Sonoma CA

  • Overnight

    Overnight: Patchy fog.  Otherwise, mostly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am.  Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 83. Calm wind becoming south southwest 5 to 9 mph in the afternoon.

    High: 83 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 1am.  Otherwise, increasing clouds, with a low around 55. Southwest wind around 6 mph becoming calm  in the evening.

    Low: 55 °F

    Clear then
    Patchy Fog

  • Friday

    Friday: Areas of fog before 9am.  Otherwise, partly sunny, then gradually becoming sunny, with a high near 85. Calm wind becoming south southwest 5 to 8 mph in the afternoon.

    High: 85 °F

    Areas Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog after 3am.  Otherwise, mostly clear, with a low around 54. Southwest wind 5 to 9 mph becoming calm  in the evening. Winds could gust as high as 18 mph.

    Low: 54 °F

    Clear then
    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 8am.  Otherwise, sunny, with a high near 86.

    High: 86 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 55. Calm wind.
Thursday
Patchy fog before 9am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 83. Calm wind becoming south southwest 5 to 9 mph in the afternoon.
Thursday Night
Patchy fog after 1am. Otherwise, increasing clouds, with a low around 55. Southwest wind around 6 mph becoming calm in the evening.
Friday
Areas of fog before 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 85. Calm wind becoming south southwest 5 to 8 mph in the afternoon.
Friday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 54. Southwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Saturday
Patchy fog before 8am. Otherwise, sunny, with a high near 86.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Sunny, with a high near 86.
Sunday Night
Mostly clear, with a low around 56.
Monday
Sunny, with a high near 85.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 88.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Sonoma CA
 38.29°N 122.46°W (Elev. 72 ft)
1:25 am PDT Jul 31, 2025
3am PDT Jul 31, 2025-6pm PDT Aug 6, 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