Significant Flood Threat Continues For South-Central U.S.

A widespread and significant flood risk continues across the south-central U.S. from repeated rounds of intense rain and strong to severe thunderstorms. Flash flood watches are in effect for large part of the ArkLaTex. Today's concern extends from the Louisiana and extreme Upper Texas Gulf Coast to northeastern Texas and southeastern Oklahoma before shifting to all of eastern Texas on Wednesday. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

Lat: 38.2075°NLon: 122.27944°WElev: 33ft.

Mostly Clear

74°F

23°C

Humidity 29%
Wind Speed WSW 21 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 18 May 04:54 PM PDT
Extended Forecast for

5 Miles SE Saint Helena CA

Wind Advisory May 19, 05:00pm until May 20, 05:00am
Click here for hazard details and duration
Wind Advisory
  • Tonight

    Tonight: Mostly clear, with a low around 43. West wind 5 to 9 mph becoming calm  in the evening. Winds could gust as high as 22 mph.

    Mostly Clear

    Low: 43 °F

  • Wednesday

    Wednesday: Sunny, with a high near 75. Light west wind becoming west northwest 5 to 10 mph in the morning. Winds could gust as high as 23 mph.

    Sunny

    High: 75 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 41. West northwest wind 5 to 10 mph, with gusts as high as 31 mph.

    Mostly Clear

    Low: 41 °F

  • Thursday

    Thursday: Sunny, with a high near 73. Northwest wind around 6 mph, with gusts as high as 18 mph.

    Sunny

    High: 73 °F

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 44. West northwest wind 8 to 13 mph becoming light north northwest  after midnight. Winds could gust as high as 21 mph.

    Mostly Clear

    Low: 44 °F

  • Friday

    Friday: Sunny, with a high near 77.

    Sunny

    High: 77 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 47.

    Mostly Clear

    Low: 47 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 78.

    Mostly Sunny

    High: 78 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 47.

    Mostly Clear

    Low: 47 °F

Detailed Forecast

Tonight
Mostly clear, with a low around 43. West wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 22 mph.
Wednesday
Sunny, with a high near 75. Light west wind becoming west northwest 5 to 10 mph in the morning. Winds could gust as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 41. West northwest wind 5 to 10 mph, with gusts as high as 31 mph.
Thursday
Sunny, with a high near 73. Northwest wind around 6 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around 44. West northwest wind 8 to 13 mph becoming light north northwest after midnight. Winds could gust as high as 21 mph.
Friday
Sunny, with a high near 77.
Friday Night
Mostly clear, with a low around 47.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 47.
Sunday
Sunny, with a high near 83.
Sunday Night
Mostly clear, with a low around 49.
Monday
Sunny, with a high near 87.
Monday Night
Mostly clear, with a low around 49.
Tuesday
Sunny, with a high near 85.
Click Map For Forecast
Point Forecast:
5 Miles SE Saint Helena CA
 38.45°N 122.41°W (Elev. 157 ft)
3:01 pm PDT May 18, 2021
5pm PDT May 18, 2021-6pm PDT May 25, 2021
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database