National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat and Possible Flooding This Week

Hot temperatures and high humidity are forecast to continue across much of east Texas into the mid-Mississippi Valley through this week. Heavy to excessive rainfall occurring at times through Friday could bring areas of flooding across parts of the central Plains into the upper Midwest and Four Corners states. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

70°F

21°C

Humidity 64%
Wind Speed SSW 10 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 15 Sep 12:20 PM PDT
Extended Forecast for

Napa CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 80. South southwest wind 5 to 8 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, increasing clouds, with a low around 53. South southwest wind around 5 mph becoming calm in the evening.

    Low: 53 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 74. Light south southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 22 mph.

    High: 74 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 4am. Otherwise, increasing clouds, with a low around 54. Southwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 22 mph.

    Low: 54 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 76. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 76 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 54.

    Low: 54 °F

    Clear then
    Patchy Fog

  • Friday

    Friday: Areas of fog before 9am. Otherwise, sunny, with a high near 83.

    High: 83 °F

    Areas Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 55.

    Low: 55 °F

    Clear then
    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 83.

    High: 83 °F

    Patchy Fog
    then Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 80. South southwest wind 5 to 8 mph.
Tonight
Patchy fog after 3am. Otherwise, increasing clouds, with a low around 53. South southwest wind around 5 mph becoming calm in the evening.
Wednesday
Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 74. Light south southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 22 mph.
Wednesday Night
Patchy fog after 4am. Otherwise, increasing clouds, with a low around 54. Southwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 22 mph.
Thursday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 76. Calm wind becoming south southwest around 5 mph in the afternoon.
Thursday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 54.
Friday
Areas of fog before 9am. Otherwise, sunny, with a high near 83.
Friday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 55.
Saturday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 83.
Saturday Night
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 54.
Sunday
Areas of fog. Otherwise, partly sunny, with a high near 79.
Sunday Night
Patchy fog. Otherwise, partly cloudy, with a low around 54.
Monday
Patchy fog. Otherwise, mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Napa CA
 38.31°N 122.32°W (Elev. 98 ft)
Last Update:
11:27 am PDT Sep 15, 2026
Forecast Valid:
12pm PDT Sep 15, 2026-6pm PDT Sep 21, 2026
 
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Additional Resources

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Chance of Precipitation