Lake Effect Snow in the Lower Great Lakes; Unsettled Pattern in the Pacific Northwest

Lake-effect snow will continue downwind of Lakes Erie and Ontario through Friday. Lake Effect Snow Warnings have been issued. In the Western U.S., rain and higher elevation snow will continue over the Great Basin through Friday. A front will move over the Pacific Northwest this afternoon and produce light rain and higher elevation snow over the Cascades through Saturday. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Mostly Cloudy

48°F

9°C

Humidity 93%
Wind Speed N 9 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 12 Feb 05:20 AM PST
Extended Forecast for

4 Miles E Saint Helena CA

  • Today

    Today: Areas of fog before 10am.  Otherwise, sunny, with a high near 63. Light north wind.

    High: 63 °F

    Areas Fog
    then Sunny

  • Tonight

    Tonight: Areas of fog after 10pm.  Otherwise, mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Areas Fog

  • Friday

    Friday: Sunny, with a high near 64. Calm wind.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: Patchy fog.  Otherwise, increasing clouds, with a low around 43. Calm wind.

    Low: 43 °F

    Patchy Fog

  • Saturday

    Saturday: Areas of fog before 10am.  Otherwise, mostly cloudy, with a high near 58. Calm wind becoming south around 5 mph in the afternoon.

    High: 58 °F

    Areas Fog
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: Rain likely, mainly after 4am.  Patchy fog after midnight.  Otherwise, cloudy, with a low around 46. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 46 °F

    Rain Likely
    and Patchy
    Fog

  • Sunday

    Sunday: Rain.  High near 56. Chance of precipitation is 90%.

    High: 56 °F

    Rain

  • Sunday Night

    Sunday Night: Rain.  Patchy fog.  Otherwise, cloudy, with a low around 45.

    Low: 45 °F

    Rain and
    Patchy Fog

  • Washington's Birthday

    Washington's Birthday: Rain.  Patchy fog before 10am.  Otherwise, cloudy, with a high near 55.

    High: 55 °F

    Rain and
    Patchy Fog

Detailed Forecast

Today
Areas of fog before 10am. Otherwise, sunny, with a high near 63. Light north wind.
Tonight
Areas of fog after 10pm. Otherwise, mostly clear, with a low around 40. Calm wind.
Friday
Sunny, with a high near 64. Calm wind.
Friday Night
Patchy fog. Otherwise, increasing clouds, with a low around 43. Calm wind.
Saturday
Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 58. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Rain likely, mainly after 4am. Patchy fog after midnight. Otherwise, cloudy, with a low around 46. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Rain. High near 56. Chance of precipitation is 90%.
Sunday Night
Rain. Patchy fog. Otherwise, cloudy, with a low around 45.
Washington's Birthday
Rain. Patchy fog before 10am. Otherwise, cloudy, with a high near 55.
Monday Night
Rain. Mostly cloudy, with a low around 40.
Tuesday
Rain. Mostly cloudy, with a high near 53.
Tuesday Night
Rain likely. Patchy fog. Otherwise, mostly cloudy, with a low around 38.
Wednesday
Rain. Patchy fog. Otherwise, mostly cloudy, with a high near 53.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Saint Helena CA
 38.5°N 122.4°W (Elev. 476 ft)
11:37 pm PST Feb 11, 2026
5am PST Feb 12, 2026-6pm PST Feb 18, 2026
 
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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