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

Critical to Extremely Critical Fire Weather Conditions in Southern California; Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario

Critical to extremely critical fire weather conditions are forecast for coastal southern California through Wednesday due to moderate to locally strong Santa Ana winds. Particularly Dangerous Situation Red Flag Warnings have been issued. Across the Great Lakes, heavy lake effect snow is expected downwind of Lakes Erie and Ontario from this afternoon into late Wednesday night. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

59°F

15°C

Humidity 28%
Wind Speed N 0 MPH
Barometer 30.29 in (1025.74 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 13 Jan 05:05 PM PST
Extended Forecast for

4 Miles WSW Napa CA

Frost Advisory January 14, 01:00am until January 14, 09:00am
Click here for hazard details and duration
Frost Advisory

  • Tonight

    Tonight: Clear, with a low around 38. North wind 8 to 13 mph becoming light north northwest in the evening. Winds could gust as high as 22 mph.

    Low: 38 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 59. Light and variable wind.

    High: 59 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Clear

  • Wednesday

    Wednesday: Patchy frost before 7am. Otherwise, sunny, with a high near 60. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 60 °F

    Patchy Frost
    then Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 36. Calm wind.

    Low: 36 °F

    Clear

  • Thursday

    Thursday: Patchy frost before 7am. Otherwise, sunny, with a high near 60.

    High: 60 °F

    Patchy Frost
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 38. North wind 8 to 13 mph becoming light north northwest in the evening. Winds could gust as high as 22 mph.
Tuesday
Sunny, with a high near 59. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 36. Calm wind.
Wednesday
Patchy frost before 7am. Otherwise, sunny, with a high near 60. Calm wind becoming east northeast around 6 mph in the afternoon.
Wednesday Night
Clear, with a low around 36. Calm wind.
Thursday
Patchy frost before 7am. Otherwise, sunny, with a high near 60.
Thursday Night
Mostly clear, with a low around 37.
Friday
Mostly sunny, with a high near 56.
Friday Night
Partly cloudy, with a low around 38.
Saturday
Mostly sunny, with a high near 56.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 54.
Sunday Night
Mostly clear, with a low around 36.
M.L.King Day
Sunny, with a high near 55.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Napa CA
 38.28°N 122.37°W (Elev. 407 ft)
Last Update:
2:35 pm PST Jan 13, 2025
Forecast Valid:
5pm PST Jan 13, 2025-6pm PST Jan 20, 2025
 
Forecast Discussion
 
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Additional Resources

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