Lake Effect Snow in the Lower Great Lakes; Rain and High Elevation Snow in the West

Lake-effect snow will continue downwind of Lakes Erie and Ontario through Friday. 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 Thursday 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.

Mist

54°F

12°C

Humidity 87%
Wind Speed SSE 5 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 50°F (10°C)
Visibility 6.00 mi
Last update 11 Feb 06:15 PM PST
Extended Forecast for

4 Miles E Saint Helena CA

  • Tonight

    Tonight: Rain likely, mainly before 1am.  Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 45. Southeast wind around 5 mph becoming light and variable  after midnight.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 45 °F

    Rain Likely
    and Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 7am.  Otherwise, partly sunny, then gradually becoming sunny, with a high near 62. North northeast wind 3 to 7 mph.

    High: 62 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Areas of fog after 10pm.  Otherwise, mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Areas Fog

  • Friday

    Friday: Mostly sunny, with a high near 65. Calm wind.

    High: 65 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Patchy fog after 9pm.  Otherwise, mostly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Patchy Fog

  • Saturday

    Saturday: A 20 percent chance of rain after 10am.  Areas of fog before 10am.  Otherwise, mostly cloudy, with a high near 58. New precipitation amounts of less than a tenth of an inch possible.

    High: 58 °F

    Slight Chance
    Rain and
    Areas Fog

  • Saturday Night

    Saturday Night: Rain likely, mainly after 4am.  Patchy fog after 10pm.  Otherwise, cloudy, with a low around 44. Chance of precipitation is 60%.

    Low: 44 °F

    Rain Likely
    and Patchy
    Fog

  • Sunday

    Sunday: Rain.  Patchy fog before 9am.  Otherwise, mostly cloudy, with a high near 56.

    High: 56 °F

    Rain and
    Patchy Fog

  • Sunday Night

    Sunday Night: Rain.  Patchy fog.  Otherwise, cloudy, with a low around 42.

    Low: 42 °F

    Rain and
    Patchy Fog

Detailed Forecast

Tonight
Rain likely, mainly before 1am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 45. Southeast wind around 5 mph becoming light and variable after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Patchy fog before 7am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 62. North northeast wind 3 to 7 mph.
Thursday Night
Areas of fog after 10pm. Otherwise, mostly clear, with a low around 41. Calm wind.
Friday
Mostly sunny, with a high near 65. Calm wind.
Friday Night
Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 43. Calm wind.
Saturday
A 20 percent chance of rain after 10am. Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 58. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain likely, mainly after 4am. Patchy fog after 10pm. Otherwise, cloudy, with a low around 44. Chance of precipitation is 60%.
Sunday
Rain. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 56.
Sunday Night
Rain. Patchy fog. Otherwise, cloudy, with a low around 42.
Washington's Birthday
Rain. Patchy fog before 9am. Otherwise, cloudy, with a high near 53.
Monday Night
Rain. Mostly cloudy, with a low around 38.
Tuesday
Rain. Mostly cloudy, with a high near 53.
Tuesday Night
Rain likely. Patchy fog. Otherwise, mostly cloudy, with a low around 37.
Wednesday
Rain likely. Patchy fog. Otherwise, mostly cloudy, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Saint Helena CA
 38.5°N 122.4°W (Elev. 476 ft)
12:26 pm PST Feb 11, 2026
6pm PST Feb 11, 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