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

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Overcast

57°F

14°C

Humidity 93%
Wind Speed W 13 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 17 Jun 02:35 AM PDT
Extended Forecast for

5 Miles E Angwin CA

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 55. South southwest wind 5 to 7 mph.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81. Light south southwest wind increasing to 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 51. Southwest wind 6 to 11 mph.

    Low: 51 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 76. Southwest wind 5 to 10 mph, with gusts as high as 21 mph.

    High: 76 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 50. West southwest wind 9 to 14 mph, with gusts as high as 21 mph.

    Low: 50 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 50.

    Low: 50 °F

    Clear then
    Patchy Fog

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 55. South southwest wind 5 to 7 mph.
Wednesday
Sunny, with a high near 81. Light south southwest wind increasing to 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 51. Southwest wind 6 to 11 mph.
Thursday
Sunny, with a high near 76. Southwest wind 5 to 10 mph, with gusts as high as 21 mph.
Thursday Night
Partly cloudy, with a low around 50. West southwest wind 9 to 14 mph, with gusts as high as 21 mph.
Juneteenth
Sunny, with a high near 70.
Friday Night
Mostly clear, with a low around 49.
Saturday
Sunny, with a high near 75.
Saturday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 50.
Sunday
Areas of fog before 7am. Otherwise, sunny, with a high near 81.
Sunday Night
Patchy fog. Otherwise, clear, with a low around 50.
Monday
Patchy fog. Otherwise, sunny, with a high near 81.
Monday Night
Patchy fog. Otherwise, clear, with a low around 51.
Tuesday
Sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles E Angwin CA
 38.57°N 122.36°W (Elev. 1581 ft)
Last Update:
1:26 am PDT Jun 17, 2026
Forecast Valid:
2am PDT Jun 17, 2026-6pm PDT Jun 23, 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