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

Tracking Areas of Fire Weather, Winter Weather, and Severe Weather Thursday

Continuation of gusty winds and low relative humidity will bring additional periods of critical fire weather to the southern Plains Thursday and Friday. Another Pacific storm will continue gusty winds and heavy snow over the western mountains into Thursday. Severe thunderstorms are possible across parts of the middle Mississippi into lower Ohio Valleys Thursday afternoon into early evening. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Overcast

45°F

7°C

Humidity 93%
Wind Speed SSE 9 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 19 Feb 12:00 AM PST
Extended Forecast for

6 Miles SE Lake Berryessa CA

Extreme Cold Warning February 20, 01:00am until February 20, 09:00am
Click here for hazard details and duration
Extreme Cold Warning

  • Overnight

    Overnight: Rain. Steady temperature around 39. Southeast wind 5 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 39 °F

    Rain

  • Thursday

    Thursday: Rain likely, mainly before 11am. Cloudy through mid morning, then gradual clearing, with a high near 50. South southwest wind 6 to 11 mph becoming west northwest 13 to 18 mph in the morning. Winds could gust as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Rain Likely
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Widespread frost, mainly after 2am. Otherwise, mostly clear, with a low around 30. West northwest wind 5 to 7 mph, with gusts as high as 21 mph.

    Low: 30 °F

    Frost

  • Friday

    Friday: Widespread frost, mainly before 9am. Otherwise, partly sunny, with a high near 50. Light and variable wind.

    High: 50 °F

    Frost then
    Partly Sunny

  • Friday Night

    Friday Night: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: A 30 percent chance of rain, mainly after 4pm. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 53. New precipitation amounts of less than a tenth of an inch possible.

    High: 53 °F

    Chance Rain
    and Patchy
    Fog

  • Saturday Night

    Saturday Night: Rain likely, mainly after 10pm. Mostly cloudy, with a low around 44. Chance of precipitation is 70%.

    Low: 44 °F

    Rain Likely

  • Sunday

    Sunday: Rain. Cloudy, with a high near 57.

    High: 57 °F

    Rain

  • Sunday Night

    Sunday Night: Rain. Cloudy, with a low around 51.

    Low: 51 °F

    Rain

Detailed Forecast

Overnight
Rain. Steady temperature around 39. Southeast wind 5 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Rain likely, mainly before 11am. Cloudy through mid morning, then gradual clearing, with a high near 50. South southwest wind 6 to 11 mph becoming west northwest 13 to 18 mph in the morning. Winds could gust as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Widespread frost, mainly after 2am. Otherwise, mostly clear, with a low around 30. West northwest wind 5 to 7 mph, with gusts as high as 21 mph.
Friday
Widespread frost, mainly before 9am. Otherwise, partly sunny, with a high near 50. Light and variable wind.
Friday Night
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 34. Calm wind.
Saturday
A 30 percent chance of rain, mainly after 4pm. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 53. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain likely, mainly after 10pm. Mostly cloudy, with a low around 44. Chance of precipitation is 70%.
Sunday
Rain. Cloudy, with a high near 57.
Sunday Night
Rain. Cloudy, with a low around 51.
Monday
Rain. Cloudy, with a high near 59.
Monday Night
Rain. Cloudy, with a low around 50.
Tuesday
Rain. Mostly cloudy, with a high near 59.
Tuesday Night
Rain. Mostly cloudy, with a low around 44.
Wednesday
Rain likely. Mostly cloudy, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SE Lake Berryessa CA
 38.51°N 122.2°W (Elev. 541 ft)
Last Update:
5:13 pm PST Feb 18, 2026
Forecast Valid:
12am PST Feb 19, 2026-6pm PST Feb 25, 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