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°NLon: 122.27944°WElev: 33.0ft.

Clear

61°F

16°C

Humidity	89%
Wind Speed	SSW 11 MPH
Barometer	30.0 in (1015.92 mb)
Dewpoint	58°F (14°C)
Visibility	10.00 mi
Last update	31 Jul 11:54 PM PDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

4 Miles E Saint Helena CA

Overnight
Low: 56 °F
Areas Smoke
Saturday
High: 98 °F
Patchy Smoke
then Sunny
Saturday Night
Low: 60 °F
Mostly Clear
Sunday
High: 99 °F
Haze then
Sunny
Sunday Night
Low: 60 °F
Mostly Clear
Monday
High: 99 °F
Hot
Monday Night
Low: 57 °F
Mostly Clear
Tuesday
High: 95 °F
Sunny
Tuesday Night
Low: 54 °F
Clear then
Patchy Fog

Detailed Forecast

Overnight

Areas of smoke. Partly cloudy, with a low around 56. Calm wind.

Saturday

Patchy smoke before 8am. Partly sunny, then gradually becoming sunny and hot, with a high near 98. Calm wind becoming south southwest around 6 mph in the afternoon.

Saturday Night

Mostly clear, with a low around 60. West southwest wind around 5 mph becoming calm in the evening.

Sunday

Widespread haze before 9am. Sunny and hot, with a high near 99. Calm wind becoming southwest around 5 mph in the afternoon.

Sunday Night

Mostly clear, with a low around 60. Southwest wind around 6 mph becoming calm in the evening.

Monday

Sunny and hot, with a high near 99.

Monday Night

Mostly clear, with a low around 57.

Tuesday

Sunny, with a high near 95.