Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. 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	86%
Wind Speed	S 10 MPH
Barometer	29.85 in (1010.84 mb)
Dewpoint	57°F (14°C)
Visibility	10.00 mi
Last update	30 Aug 07:54 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

Tonight
Low: 50 °F
Clear then
Patchy Fog
Monday
High: 79 °F
Areas Fog
then Sunny
Monday Night
Low: 49 °F
Partly Cloudy
then Patchy
Fog
Tuesday
High: 72 °F
Gradual
Clearing
Tuesday Night
Low: 48 °F
Partly Cloudy
then Areas
Fog
Wednesday
High: 74 °F
Areas Fog
then Mostly
Sunny
Wednesday Night
Low: 51 °F
Patchy Fog
Thursday
High: 75 °F
Slight Chance
Rain and
Areas Fog
then Partly
Sunny
Thursday Night
Low: 50 °F
Patchy Fog

Detailed Forecast

Tonight

Patchy fog after midnight. Otherwise, increasing clouds, with a low around 50. Calm wind.

Monday

Areas of fog before 9am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 79. Calm wind becoming west southwest 5 to 8 mph in the afternoon.

Monday Night

Patchy fog after 2am. Otherwise, increasing clouds, with a low around 49. Southwest wind around 6 mph becoming calm in the evening.

Tuesday

Cloudy through mid morning, then gradual clearing, with a high near 72. Calm wind becoming southwest 5 to 8 mph in the morning. Winds could gust as high as 18 mph.

Tuesday Night

Areas of fog after 2am. Otherwise, partly cloudy, with a low around 48. West southwest wind 5 to 10 mph becoming light south after midnight. Winds could gust as high as 24 mph.

Wednesday

Areas of fog before 11am. Otherwise, partly sunny, with a high near 74.

Wednesday Night

Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 51.

Thursday

A slight chance of rain before 11am. Areas of fog before 8am. Otherwise, partly sunny, with a high near 75.

Thursday Night

Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 50.

Friday

Areas of fog before 8am. Otherwise, mostly sunny, with a high near 78.

Friday Night

Patchy fog. Otherwise, mostly clear, with a low around 49.