Heat Wave and Severe Thunderstorms this Independence Day

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Midwest, and Mid-Atlantic. Numerous temperature records are expected. Clusters of severe thunderstorms will move across parts of the Allegheny Plateau into Mid Atlantic this Independence Day, with potential for widespread damaging winds. Additional severe thunderstorms in the Great Plains. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

68°F

20°C

Humidity 68%
Wind Speed SSW 10 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 04 Jul 01:00 PM PDT
Detailed forecast for

North Bay Interior Mountains

Rest Of Today
Sunny. Highs in the 70s to 80s. South winds 5 to 10 mph.
Tonight
Partly cloudy in the evening then becoming mostly cloudy. Lows in the 50s. Southwest winds 5 to 10 mph.
Sunday
Partly cloudy. Highs in the mid 60s to lower 80s. Southwest winds 5 to 10 mph.
Sunday Night
Mostly clear. Lows in the 50s. Southwest winds 5 to 10 mph.
Monday
Sunny. Highs in the upper 60s to lower 80s. Southwest winds 5 to 10 mph.
Monday Night
Mostly clear. Lows in the upper 40s to mid 50s.
Tuesday And Tuesday Night
Mostly clear. Highs in the upper 60s to lower 80s. Lows in the 50s.
Wednesday
Sunny. Highs in the mid 70s to upper 80s.
Wednesday Night
Mostly clear. Lows in the upper 50s to mid 60s.
Thursday
Sunny. Highs in the upper 70s to lower 90s.
Thursday Night And Friday
Mostly clear. Lows near 60. Highs in the mid 70s to lower 90s.



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1102 AM PDT Sat Jul 4 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database