Excessive Rainfall Potential for the Southeast; Heat Expands for Center of the Nation; Critical Fire Weather for Pacific Northwest

Flash flooding threatens areas from the Tennessee Valley to the Carolinas as storms repeat along a stalled front. Monsoonal storms may trigger flooding in the Southwest. Dangerous heat expands across the Desert Southwest, Plains, mid-Mississippi Valley and Southern Tier. Critical fire weather for interior Pacific Northwest. Cooler, drier air brings brief relief to the Great Lakes and Northeast. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

55°F

13°C

Humidity 93%
Wind Speed W 5 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 26 Jul 04:00 AM PDT
Extended Forecast for

4 Miles SE Saint Helena CA

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 90. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 90 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Patchy fog after 5am.  Otherwise, increasing clouds, with a low around 54. West southwest wind around 5 mph becoming calm  in the evening.

    Low: 54 °F

    Clear then
    Patchy Fog

  • Monday

    Monday: Patchy fog before 7am.  Otherwise, partly sunny, then gradually becoming sunny, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 91 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. West southwest wind around 6 mph becoming calm  in the evening.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94. Light and variable wind.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 57.

    Low: 57 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 90. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Tonight
Patchy fog after 5am. Otherwise, increasing clouds, with a low around 54. West southwest wind around 5 mph becoming calm in the evening.
Monday
Patchy fog before 7am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 57. West southwest wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 94. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 94.
Wednesday Night
Clear, with a low around 57.
Thursday
Sunny, with a high near 94.
Thursday Night
Clear, with a low around 56.
Friday
Sunny and hot, with a high near 97.
Friday Night
Clear, with a low around 57.
Saturday
Sunny and hot, with a high near 99.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Saint Helena CA
 38.45°N 122.41°W (Elev. 157 ft)
2:52 am PDT Jul 26, 2026
4am PDT Jul 26, 2026-6pm PDT Aug 1, 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