Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

79°F

26°C

Humidity 50%
Wind Speed S 10 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 01 Aug 06:00 PM PDT
Detailed forecast for

North Bay Interior Mountains

Tonight
Clear. Lows in the 60s to lower 70s. West winds 5 to 10 mph...becoming north after midnight.
Sunday
Sunny. Highs in the mid 80s to upper 90s. North winds up to 5 mph...becoming southwest in the afternoon.
Sunday Night
Clear. Lows in the 60s to lower 70s. Southwest winds around 5 mph in the evening...becoming light.
Monday
Sunny. Highs in the mid 80s to upper 90s. Northeast winds up to 5 mph...becoming south in the afternoon.
Monday Night
Clear. Lows in the upper 50s to lower 70s. Southwest winds around 5 mph in the evening...becoming light.
Tuesday
Sunny. Highs in the lower 80s to mid 90s.
Tuesday Night Through Friday Night
Clear. Lows in the 50s to 60s. Highs in the upper 70s to mid 90s.
Saturday
Sunny. Highs in the lower 80s to mid 90s.



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602 PM PDT Sat Aug 1 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database