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

Severe Thunderstorms, Heavy Rainfall and Dangerous Heat

Severe thunderstorms are expected today and Friday from the upper Midwest, central Great Lakes into the Ohio and mid-Mississippi Valley's. In addition, heavy rainfall threat increases on Friday across the Ohio Valley. Meanwhile, early summer-like heat wave across portions of southern Texas with new daily records are forecast today and through the weekend; The heat spreads across the Gulf States. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

54°F

12°C

Humidity 76%
Wind Speed SW 6 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 16 May 02:35 AM PDT
Extended Forecast for

Napa CA

  • Overnight

    Overnight: Partly cloudy, with a low around 50. South wind 3 to 5 mph.

    Low: 50 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 80. Light south wind becoming west southwest 6 to 11 mph in the morning.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 51. West southwest wind 5 to 9 mph becoming south in the evening.

    Low: 51 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 74. West wind 6 to 14 mph, with gusts as high as 20 mph.

    High: 74 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 50. West northwest wind 9 to 14 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.

    Low: 50 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 54.

    Low: 54 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 57.

    Low: 57 °F

    Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 50. South wind 3 to 5 mph.
Friday
Sunny, with a high near 80. Light south wind becoming west southwest 6 to 11 mph in the morning.
Friday Night
Increasing clouds, with a low around 51. West southwest wind 5 to 9 mph becoming south in the evening.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 74. West wind 6 to 14 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 50. West northwest wind 9 to 14 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 79.
Sunday Night
Clear, with a low around 54.
Monday
Sunny, with a high near 87.
Monday Night
Clear, with a low around 57.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Clear, with a low around 54.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
Sunny, with a high near 87.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Napa CA
 38.29°N 122.29°W (Elev. 20 ft)
Last Update:
2:25 am PDT May 16, 2025
Forecast Valid:
2am PDT May 16, 2025-6pm PDT May 22, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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