Heat Wave Continues in the Northeastern Quarter of the U.S.; Excessive Rain May Bring Flooding in the North Central U.S.

The heat wave is expected to peak in the eastern Great Lakes and New England today, and the Ohio Valley and Mid-Atlantic Friday into the weekend. Widespread daily record high temperatures are likely. Heavy to excessive rainfall will be associated with thunderstorms forecast to move across parts of the northern Plains and Upper Midwest today into Friday. Read More >

Hazardous Weather Conditions

Heat Advisory in effect from June 22, 11:00 AM PDT until June 22, 10:00 PM PDT

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

65°F

18°C

Humidity	67%
Wind Speed	SSW 14 MPH
Barometer	29.81 in (1009.48 mb)
Dewpoint	54°F (12°C)
Visibility	10.00 mi
Last update	20 Jun 05:54 PM PDT

More Information:

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

Extended Forecast for

5 Miles E Yountville CA

Heat Advisory June 22, 11:00am until June 22, 10:00pm

Click here for hazard details and duration

Heat Advisory

Tonight
Low: 50 °F
Mostly Clear
then Patchy
Fog
Friday
High: 91 °F
Mostly Sunny
then Haze
Friday Night
Low: 54 °F
Mostly Clear
Saturday
High: 94 °F
Sunny
Saturday Night
Low: 52 °F
Mostly Clear
Sunday
High: 84 °F
Sunny
Sunday Night
Low: 50 °F
Clear then
Patchy Fog
Monday
High: 84 °F
Patchy Fog
then Sunny
Monday Night
Low: 50 °F
Mostly Clear

Detailed Forecast

Tonight

Patchy fog after 1am. Otherwise, mostly clear, with a low around 50. South wind 5 to 7 mph becoming calm in the evening.

Friday

Widespread haze between 2pm and 4pm. Partly sunny, then gradually becoming sunny, with a high near 91. Calm wind becoming south southwest 5 to 9 mph in the afternoon.

Friday Night

Mostly clear, with a low around 54. South southwest wind around 6 mph becoming calm in the evening.

Saturday

Sunny, with a high near 94. Calm wind becoming south southwest 5 to 8 mph in the afternoon.

Saturday Night

Mostly clear, with a low around 52. Southwest wind around 6 mph becoming calm in the evening.

Sunday

Sunny, with a high near 84.

Sunday Night

Patchy fog after 3am. Otherwise, mostly clear, with a low around 50.

Monday

Patchy fog before 7am. Otherwise, sunny, with a high near 84.