Heat Persists in the South Central U.S. and Southwest; Heavy rains in the Desert Southwest and Central Plains

Sweltering heat remains across the South-Central Plains, Lower/Middle Mississippi Valley, and the Southwest this week with limited nighttime relief. Thunderstorms will bring heavy rainfall leading to localized flash flooding in portions of the Desert Southwest and central Plains. Isolated strong to severe thunderstorms are possible across portions of the central Plains into the Northeast. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

Lat: 38.2075° N Lon: 122.27944° W Elev: 33.0 ft.

Clear

64°F

18°C

Humidity 67%
Wind Speed N 0 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 09 Sep 02:05 AM PDT
Detailed forecast for

North Bay Interior Mountains

Rest Of Tonight
Mostly clear late in the evening then becoming partly cloudy. Lows around 70. North winds up to 5 mph.
Wednesday
Sunny in the morning then becoming partly cloudy. Highs in the 90s. North winds up to 5 mph...becoming west in the afternoon.
Wednesday Night
Partly cloudy. Lows in the lower 70s. Northwest winds up to 5 mph.
Thursday
Sunny. Highs in the mid 80s to upper 90s. Light winds...becoming southwest 5 to 10 mph in the afternoon.
Thursday Night
Mostly clear. Lows in the lower to mid 60s. West winds 5 to 10 mph.
Friday
Sunny. Highs in the upper 70s to lower 90s.
Friday Night Through Saturday Night
Mostly clear. Lows in the mid 50s to lower 60s. Highs in the 70s to lower 80s.
Sunday And Sunday Night
Clear. Highs in the mid 70s to lower 80s. Lows in the mid 50s to lower 60s.
Monday
Sunny. Highs in the 70s to lower 80s.
Monday Night
Clear. Lows in the mid to upper 50s.
Tuesday
Sunny. Highs in the 60s to upper 70s.



Basemap Options
Click map to change the forecast location
Loading map...
902 PM PDT Tue Sep 8 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database