Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. 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 SW 6 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 19 Aug 03:35 AM PDT
Extended Forecast for

Napa CASimilar City Names

  • Overnight

    Overnight: Mostly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Patchy fog before 8am.  Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 82. Calm wind becoming south southwest 5 to 8 mph in the afternoon.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 57. South southwest wind around 5 mph becoming calm  in the evening.

    Low: 57 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 81. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 81 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 57. Southwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny

  • Friday Night

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

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 80.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Saturday Night

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

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 57. Calm wind.
Wednesday
Patchy fog before 8am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 82. Calm wind becoming south southwest 5 to 8 mph in the afternoon.
Wednesday Night
Increasing clouds, with a low around 57. South southwest wind around 5 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 81. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 57. Southwest wind 5 to 7 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 56.
Saturday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 55.
Monday
Patchy fog. Otherwise, mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Partly sunny, with a high near 77.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Napa CASimilar City Names
 38.29°N 122.29°W (Elev. 20 ft)
2:31 am PDT Aug 19, 2026
3am PDT Aug 19, 2026-6pm PDT Aug 25, 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