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Heavy Lake Effect Snow; Fire Weather Concerns for Hawaii

Colder air is rushing southward from the Plains into the Southeast. Heavy lake effect snow will occur with up to a few feet of snow and dangerous traveling conditions. Outside of the lake effect, strong winds will make it feel colder and could impact travel for high profile vehicles. The West Coast states will experience a couple of strong Pacific systems. Closely watching Hawaii for wildfires. Read More >

Hazardous Weather Conditions

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 SW 5 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 46°F (8°C)
Visibility 9.00 mi
Wind Chill46°F (8°C)
Last update 12 Dec 08:20 AM PST
Extended Forecast for

4 Miles SW Napa CA

Flood Watch December 13, 02:00pm until December 14, 04:00pm
Coastal Flood Advisory until December 16, 01:00pm
Click here for hazard details and duration
Flood Watch
Coastal Flood Advisory
  •  
    Coastal Flood Advisory until December 16, 01:00pm

    NOW until 1:00pm Mon

    Coastal Flood Advisory

  • Today

    High: 54 °F

    Rain Likely

  • Tonight

    Tonight: A slight chance of rain before 7pm, then a slight chance of rain after 3am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 43. West wind around 6 mph becoming calm after midnight. Chance of precipitation is 20%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Friday

    Friday: A 50 percent chance of rain. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 55. Light and variable wind becoming south 6 to 11 mph in the morning. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 55 °F

    Chance Rain
    and Patchy
    Fog

  • Friday Night

    Friday Night: Rain, mainly after 10pm. Low around 46. South southeast wind around 10 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 46 °F

    Rain

  • Saturday

    Saturday: Rain, mainly before 4pm. The rain could be heavy at times. High near 56. Southeast wind 17 to 21 mph becoming west southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 56 °F

    Heavy Rain

  • Saturday Night

    Saturday Night: A 40 percent chance of rain before 10pm. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 37. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Chance Rain
    then Patchy
    Fog

  • Sunday

    Sunday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 56.

    High: 56 °F

    Areas Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: A chance of rain after 4am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy
    then Chance
    Rain and
    Patchy Fog

Detailed Forecast

Today
Rain likely, mainly after 1pm. Mostly cloudy, with a high near 54. West wind 6 to 14 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
A slight chance of rain before 7pm, then a slight chance of rain after 3am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 43. West wind around 6 mph becoming calm after midnight. Chance of precipitation is 20%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 50 percent chance of rain. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 55. Light and variable wind becoming south 6 to 11 mph in the morning. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain, mainly after 10pm. Low around 46. South southeast wind around 10 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday
Rain, mainly before 4pm. The rain could be heavy at times. High near 56. Southeast wind 17 to 21 mph becoming west southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Saturday Night
A 40 percent chance of rain before 10pm. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 37. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 56.
Sunday Night
A chance of rain after 4am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 38.
Monday
Rain, mainly between 10am and 4pm. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 53.
Monday Night
A chance of rain, mainly before 10pm. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 42.
Tuesday
Patchy fog. Otherwise, partly sunny, with a high near 59.
Tuesday Night
Partly cloudy, with a low around 38.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 59.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Napa CA
 38.26°N 122.36°W (Elev. 98 ft)
Last Update:
3:43 am PST Dec 12, 2024
Forecast Valid:
8am PST Dec 12, 2024-6pm PST Dec 18, 2024
 
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