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

Heavy Snow in the Sierra Nevada; Heavy Rainfall in Texas Sunday

Heavy snow is expected in the Sierra Nevada mountain ranges into Saturday causing hazardous travel conditions. Winter Storm Warnings have been issued. Thunderstorms and moderate to heavy rainfall are expected across portions of eastern Texas into Louisiana on Sunday. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Partly Cloudy

63°F

17°C

Humidity 62%
Wind Speed SW 5 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 14 Nov 01:54 PM PST
Extended Forecast for

5 Miles ESE Lake Berryessa CA

  • This Afternoon

    This Afternoon: A 20 percent chance of showers. Mostly cloudy, with a high near 63. South wind around 5 mph.

    High: 63 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain. High near 59. Southeast wind 5 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 59 °F

    Rain

  • Sunday Night

    Sunday Night: Rain before 1am, then a chance of rain after 2am. Patchy fog after 2am. Low around 44. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 44 °F

    Rain then
    Chance Rain
    and Patchy
    Fog

  • Monday

    Monday: Areas of fog before 11am. Otherwise, mostly sunny, with a high near 61. Calm wind becoming west around 5 mph in the afternoon.

    High: 61 °F

    Areas Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Areas of fog before 10am. Otherwise, sunny, with a high near 59.

    High: 59 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Rain after 10pm. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Rain

  • Wednesday

    Wednesday: Rain. Cloudy, with a high near 54.

    High: 54 °F

    Rain

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Mostly cloudy, with a high near 63. South wind around 5 mph.
Tonight
Mostly cloudy, with a low around 46. Calm wind.
Sunday
Rain. High near 59. Southeast wind 5 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain before 1am, then a chance of rain after 2am. Patchy fog after 2am. Low around 44. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Areas of fog before 11am. Otherwise, mostly sunny, with a high near 61. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 38.
Tuesday
Areas of fog before 10am. Otherwise, sunny, with a high near 59.
Tuesday Night
Rain after 10pm. Mostly cloudy, with a low around 42.
Wednesday
Rain. Cloudy, with a high near 54.
Wednesday Night
Rain. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 41.
Thursday
Rain. Areas of fog. Otherwise, mostly cloudy, with a high near 55.
Thursday Night
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 40.
Friday
Patchy fog. Otherwise, mostly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles ESE Lake Berryessa CA
 38.54°N 122.18°W (Elev. 597 ft)
Last Update:
12:46 pm PST Nov 14, 2026
Forecast Valid:
2pm PST Nov 14, 2026-6pm PST Nov 20, 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