Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

63°F

17°C

Humidity 93%
Wind Speed SW 5 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 27 Aug 02:35 AM PDT
Extended Forecast for

4 Miles NNE Napa CA

  • Overnight

    Overnight: A 20 percent chance of rain after 4am.  Mostly clear, with a low around 60. Calm wind.

    Low: 60 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: A 20 percent chance of rain.  Mostly sunny, with a high near 84. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 84 °F

    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain.  Mostly cloudy, with a low around 59. South wind around 6 mph becoming calm.

    Low: 59 °F

    Slight Chance
    Rain

  • Friday

    Friday: A 20 percent chance of rain before 11am.  Cloudy, with a high near 76. Light south wind becoming south southwest 5 to 10 mph in the afternoon.

    High: 76 °F

    Slight Chance
    Rain then
    Cloudy

  • Friday Night

    Friday Night: Patchy fog after 2am.  Otherwise, partly cloudy, with a low around 51. South southwest wind 6 to 11 mph becoming light west southwest  in the evening.

    Low: 51 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 10am.  Otherwise, sunny, with a high near 75.

    High: 75 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 1am.  Otherwise, mostly clear, with a low around 50.

    Low: 50 °F

    Clear then
    Patchy Fog

  • Sunday

    Sunday: Areas of fog before 11am.  Otherwise, sunny, with a high near 73.

    High: 73 °F

    Areas Fog
    then Sunny

  • Sunday Night

    Sunday Night: Patchy fog after midnight.  Otherwise, mostly clear, with a low around 49.

    Low: 49 °F

    Clear then
    Patchy Fog

Detailed Forecast

Overnight
A 20 percent chance of rain after 4am. Mostly clear, with a low around 60. Calm wind.
Thursday
A 20 percent chance of rain. Mostly sunny, with a high near 84. Calm wind becoming south 5 to 9 mph in the afternoon.
Thursday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 59. South wind around 6 mph becoming calm.
Friday
A 20 percent chance of rain before 11am. Cloudy, with a high near 76. Light south wind becoming south southwest 5 to 10 mph in the afternoon.
Friday Night
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 51. South southwest wind 6 to 11 mph becoming light west southwest in the evening.
Saturday
Patchy fog before 10am. Otherwise, sunny, with a high near 75.
Saturday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 50.
Sunday
Areas of fog before 11am. Otherwise, sunny, with a high near 73.
Sunday Night
Patchy fog after midnight. Otherwise, mostly clear, with a low around 49.
Monday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 67.
Monday Night
Patchy fog. Otherwise, mostly clear, with a low around 47.
Tuesday
Patchy fog. Otherwise, mostly sunny, with a high near 70.
Tuesday Night
Patchy fog. Otherwise, mostly clear, with a low around 49.
Wednesday
Areas of fog. Otherwise, mostly sunny, with a high near 73.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Napa CA
 38.37°N 122.25°W (Elev. 404 ft)
2:57 am PDT Aug 27, 2026
3am PDT Aug 27, 2026-6pm PDT Sep 2, 2026
 
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