Areas of Excessive Rainfall and Severe Thunderstorms Today

Heavy to excessive rainfall from thunderstorms may bring areas of flooding today across parts of Texas, the Southeast U.S., and the lower Ohio Valley. Severe thunderstorms with large hail, damaging wind gusts, and a couple tornadoes are expected this afternoon and evening across parts of west and southwest Texas. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Mostly Cloudy

69°F

21°C

Humidity 40%
Wind Speed NW 5 MPH
Barometer 29.84 in (1010.5 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 26 May 11:54 AM PDT
Extended Forecast for

4 Miles E Saint Helena CA

  • This Afternoon

    This Afternoon: A 40 percent chance of rain after 4pm.  Mostly sunny, with a high near 70. West northwest wind around 6 mph.

    High: 70 °F

    Chance Rain

  • Tonight

    Tonight: Patchy fog after 4am.  Otherwise, partly cloudy, with a low around 46. West northwest wind around 6 mph becoming calm  in the evening.

    Low: 46 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: A 30 percent chance of rain, mainly between 1pm and 4pm.  Patchy fog before 7am.  Otherwise, partly sunny, with a high near 70. Calm wind becoming southwest around 5 mph in the afternoon.  New precipitation amounts of less than a tenth of an inch possible.

    High: 70 °F

    Patchy Fog
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 3am, then a slight chance of rain after 4am.  Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 48. Calm wind.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday

    Thursday: A 20 percent chance of rain.  Areas of fog before 8am.  Otherwise, mostly sunny, with a high near 72. Calm wind becoming southwest around 6 mph in the afternoon.  New precipitation amounts of less than a tenth of an inch possible.

    High: 72 °F

    Slight Chance
    Rain and
    Areas Fog

  • Thursday Night

    Thursday Night: Patchy fog after 2am.  Otherwise, partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Areas of fog before 8am.  Otherwise, mostly sunny, with a high near 73.

    High: 73 °F

    Areas Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Areas of fog after 1am.  Otherwise, mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear
    then Areas
    Fog

  • Saturday

    Saturday: Areas of fog before 8am.  Otherwise, sunny, with a high near 79.

    High: 79 °F

    Areas Fog
    then Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of rain after 4pm. Mostly sunny, with a high near 70. West northwest wind around 6 mph.
Tonight
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 46. West northwest wind around 6 mph becoming calm in the evening.
Wednesday
A 30 percent chance of rain, mainly between 1pm and 4pm. Patchy fog before 7am. Otherwise, partly sunny, with a high near 70. Calm wind becoming southwest around 5 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A chance of rain before 3am, then a slight chance of rain after 4am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 48. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A 20 percent chance of rain. Areas of fog before 8am. Otherwise, mostly sunny, with a high near 72. Calm wind becoming southwest around 6 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 48.
Friday
Areas of fog before 8am. Otherwise, mostly sunny, with a high near 73.
Friday Night
Areas of fog after 1am. Otherwise, mostly clear, with a low around 49.
Saturday
Areas of fog before 8am. Otherwise, sunny, with a high near 79.
Saturday Night
Clear, with a low around 49.
Sunday
Sunny, with a high near 84.
Sunday Night
Clear, with a low around 52.
Monday
Sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Saint Helena CA
 38.5°N 122.4°W (Elev. 476 ft)
11:26 am PDT May 26, 2026
12pm PDT May 26, 2026-6pm PDT Jun 1, 2026
 
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Additional Resources

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