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

Significant Coastal Impacts to the Mid-Atlantic and Northeast; Tropical Storm Nolo to Impact Hawaii

A strong coastal storm will bring moderate to major coastal flooding, strong winds, heavy rainfall and high surf to the Mid-Atlantic and New England. Tropical Storm Nolo is expected to strengthen into a hurricane Thursday as it moves north toward the Big Island of Hawaii. Heavy rainfall will continue through Saturday, with locally catastrophic flooding possible. Hurricane Watch in effect. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

haze

73°F

23°C

Humidity 56%
Wind Speed SSE 3 MPH
Barometer 29.84 in (1010.5 mb)
Dewpoint 57°F (14°C)
Visibility 9.00 mi
Last update 23 Sep 07:35 PM PDT
Extended Forecast for

4 Miles E Saint Helena CA

  • Tonight

    Tonight: Mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 87. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 55. Light west wind.

    Low: 55 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 82. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 51. West southwest wind around 6 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 57. Calm wind.
Thursday
Mostly sunny, with a high near 87. Calm wind becoming south southwest around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 55. Light west wind.
Friday
Sunny, with a high near 82. Calm wind becoming west southwest around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 51. West southwest wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Mostly clear, with a low around 49.
Monday
Sunny, with a high near 83.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Sunny, with a high near 88.
Tuesday Night
Mostly clear, with a low around 54.
Wednesday
Sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Saint Helena CA
 38.5°N 122.4°W (Elev. 476 ft)
Last Update:
2:31 pm PDT Sep 23, 2026
Forecast Valid:
7pm PDT Sep 23, 2026-6pm PDT Sep 30, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation