Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Overcast

57°F

14°C

Humidity	87%
Wind Speed	WSW 9 MPH
Barometer	29.93 in (1013.55 mb)
Dewpoint	54°F (12°C)
Visibility	10.00 mi
Last update	31 Aug 08:35 AM PDT

More Information:

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

Extended Forecast for

3 Miles S Yountville CA

Today
High: 76 °F
Patchy Fog
then Sunny
Tonight
Low: 50 °F
Increasing
Clouds
Tuesday
High: 71 °F
Partly Sunny
Tuesday Night
Low: 50 °F
Areas Fog
Wednesday
High: 74 °F
Areas Fog
then Mostly
Sunny
Wednesday Night
Low: 51 °F
Areas Fog
Thursday
High: 73 °F
Slight Chance
Rain and
Areas Fog
Thursday Night
Low: 49 °F
Areas Fog
Friday
High: 75 °F
Areas Fog
then Sunny

Detailed Forecast

Today

Patchy fog before 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 76. Light south southwest wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph.

Tonight

Increasing clouds, with a low around 50. West southwest wind 5 to 9 mph becoming light after midnight. Winds could gust as high as 21 mph.

Tuesday

Partly sunny, with a high near 71. Light southwest wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph.

Tuesday Night

Areas of fog after 11pm. Otherwise, partly cloudy, with a low around 50. West southwest wind 6 to 11 mph becoming light and variable in the evening. Winds could gust as high as 24 mph.

Wednesday

Areas of fog before 11am. Otherwise, mostly sunny, with a high near 74. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

Wednesday Night

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

Thursday

A 20 percent chance of rain. Areas of fog before 11am. Otherwise, partly sunny, with a high near 73.

Thursday Night

Areas of fog after 11pm. Otherwise, partly cloudy, with a low around 49.

Friday

Areas of fog before 11am. Otherwise, mostly sunny, with a high near 75.

Friday Night

Patchy fog after 10pm. Otherwise, mostly clear, with a low around 47.

Saturday

Areas of fog. Otherwise, mostly sunny, with a high near 77.