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

Extremely Critical Fire Weather in the Central Plains; Active Pattern in the West

Gusty to high winds and low relative humidity will bring critical to extremely critical fire weather conditions to the central and southern Plains today into Wednesday. Use caution with any potential ignition sources. Two Pacific storms will impact the western U.S. into Wednesday with gusty winds, low elevation rain and heavy mountain snow. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Overcast

48°F

9°C

Humidity 81%
Wind Speed WSW 14 MPH
Barometer 29.67 in (1004.74 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 17 Feb 03:35 PM PST
Extended Forecast for

2 Miles SSW Lake Berryessa CA

Cold Weather Advisory February 18, 12:00am until February 18, 09:00am
Click here for hazard details and duration
Cold Weather Advisory

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm before 4pm, then a chance of rain and thunderstorms after 4pm. Mostly cloudy, with a high near 45. West southwest wind around 17 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 45 °F

    Showers
    Likely

  • Tonight

    Tonight: A chance of rain and snow before 4am, then a slight chance of snow between 4am and 5am. Areas of frost between 2am and 3am. Otherwise, partly cloudy, with a low around 34. West northwest wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 34 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Wednesday

    Wednesday: A chance of rain and snow before 1pm, then a chance of rain between 1pm and 5pm. Partly sunny, with a high near 47. Light west wind becoming west southwest 5 to 9 mph in the morning. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 47 °F

    Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain, mainly after 9pm. Low around 38. Southwest wind 7 to 9 mph becoming south southeast after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 38 °F

    Rain

  • Thursday

    Thursday: Rain and snow before 10am, then a chance of snow between 10am and 1pm, then a chance of rain and snow after 1pm. High near 44. Southwest wind 8 to 14 mph becoming north northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 44 °F

    Rain/Snow
    then Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A slight chance of rain and snow before 10pm. Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 33. Chance of precipitation is 20%.

    Low: 33 °F

    Slight Chance
    Rain/Snow
    then Frost

  • Friday

    Friday: A slight chance of rain and snow between 10am and 1pm, then a slight chance of rain after 1pm. Widespread frost, mainly before 7am. Otherwise, mostly sunny, with a high near 47. Chance of precipitation is 20%.

    High: 47 °F

    Slight Chance
    Rain/Snow

  • Friday Night

    Friday Night: A chance of rain, mainly between 10pm and 4am. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain, mainly after 10am. Partly sunny, with a high near 48.

    High: 48 °F

    Chance Rain

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm before 4pm, then a chance of rain and thunderstorms after 4pm. Mostly cloudy, with a high near 45. West southwest wind around 17 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of rain and snow before 4am, then a slight chance of snow between 4am and 5am. Areas of frost between 2am and 3am. Otherwise, partly cloudy, with a low around 34. West northwest wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Wednesday
A chance of rain and snow before 1pm, then a chance of rain between 1pm and 5pm. Partly sunny, with a high near 47. Light west wind becoming west southwest 5 to 9 mph in the morning. Chance of precipitation is 30%. Little or no snow accumulation expected.
Wednesday Night
Rain, mainly after 9pm. Low around 38. Southwest wind 7 to 9 mph becoming south southeast after midnight. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain and snow before 10am, then a chance of snow between 10am and 1pm, then a chance of rain and snow after 1pm. High near 44. Southwest wind 8 to 14 mph becoming north northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday Night
A slight chance of rain and snow before 10pm. Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 33. Chance of precipitation is 20%.
Friday
A slight chance of rain and snow between 10am and 1pm, then a slight chance of rain after 1pm. Widespread frost, mainly before 7am. Otherwise, mostly sunny, with a high near 47. Chance of precipitation is 20%.
Friday Night
A chance of rain, mainly between 10pm and 4am. Mostly cloudy, with a low around 36.
Saturday
A chance of rain, mainly after 10am. Partly sunny, with a high near 48.
Saturday Night
Rain, mainly after 10pm. Mostly cloudy, with a low around 45.
Sunday
Rain. Cloudy, with a high near 54.
Sunday Night
Rain. Cloudy, with a low around 51.
Monday
Rain. Cloudy, with a high near 55.
Monday Night
Rain. Cloudy, with a low around 50.
Tuesday
Rain. Cloudy, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Lake Berryessa CA
 38.54°N 122.26°W (Elev. 1824 ft)
Last Update:
2:05 pm PST Feb 17, 2026
Forecast Valid:
3pm PST Feb 17, 2026-6pm PST Feb 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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