Heavy Rainfall and Severe Thunderstorm Threats for the Plains and Southeast

A frontal boundary extending from the western High Plains to the Southeast will focus additional showers and thunderstorms this weekend. Some of these storms may become severe, alongside frequent lightning, and isolated instances of flash flooding. Meanwhile dry conditions will continue for the Great Basin where fire weather concerns linger. For the mid-Atlantic and Northeast, seasonable weather. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

72°F

22°C

Humidity	61%
Wind Speed	SSW 11 MPH
Barometer	30.06 in (1017.95 mb)
Dewpoint	58°F (14°C)
Visibility	10.00 mi
Last update	02 Aug 05:54 PM PDT

More Information:

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

Extended Forecast for

4 Miles SE Saint Helena CA

Tonight
Low: 54 °F
Clear then
Patchy Fog
Sunday
High: 89 °F
Patchy Fog
then Sunny
Sunday Night
Low: 54 °F
Mostly Clear
Monday
High: 88 °F
Sunny
Monday Night
Low: 52 °F
Mostly Clear
Tuesday
High: 89 °F
Sunny
Tuesday Night
Low: 56 °F
Mostly Clear
Wednesday
High: 92 °F
Sunny
Wednesday Night
Low: 58 °F
Mostly Clear

Detailed Forecast

Tonight

Patchy fog after 3am. Otherwise, increasing clouds, with a low around 54. South southwest wind around 5 mph becoming calm in the evening.

Sunday

Patchy fog before 8am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 89. Calm wind becoming west 5 to 7 mph in the afternoon.

Sunday Night

Mostly clear, with a low around 54. West wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 18 mph.

Monday

Sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.

Monday Night

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

Tuesday

Sunny, with a high near 89.

Tuesday Night

Mostly clear, with a low around 56.

Wednesday

Sunny, with a high near 92.