Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Overcast

61°F

16°C

Humidity	82%
Wind Speed	SSW 8 MPH
Barometer	29.96 in (1014.56 mb)
Dewpoint	55°F (13°C)
Visibility	10.00 mi
Last update	20 Sep 11:20 AM PDT

More Information:

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

Extended Forecast for

4 Miles E Saint Helena CA

Today
High: 81 °F
Partly Sunny
Tonight
Low: 51 °F
Mostly Cloudy
then Patchy
Fog
Monday
High: 81 °F
Areas Fog
then Sunny
Monday Night
Low: 50 °F
Patchy Fog
Tuesday
High: 85 °F
Areas Fog
then Sunny
Tuesday Night
Low: 52 °F
Clear then
Patchy Fog
Wednesday
High: 91 °F
Areas Fog
then Sunny
Wednesday Night
Low: 57 °F
Partly Cloudy
Thursday
High: 89 °F
Mostly Sunny

Detailed Forecast

Today

Partly sunny, with a high near 81. Light south wind.

Tonight

Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 51. Calm wind.

Monday

Areas of fog before 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 81. Calm wind becoming south around 6 mph in the afternoon.

Monday Night

Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 50. Light and variable wind.

Tuesday

Areas of fog before 9am. Otherwise, mostly sunny, with a high near 85. Light and variable wind.

Tuesday Night

Patchy fog after midnight. Otherwise, mostly clear, with a low around 52.

Wednesday

Areas of fog before 9am. Otherwise, sunny, with a high near 91.

Wednesday Night

Partly cloudy, with a low around 57.

Thursday

Mostly sunny, with a high near 89.