Heavy Snow in the Sierra Nevada; Heavy Rainfall in Texas Sunday

Heavy snow is expected in the Sierra Nevada mountain ranges into Saturday causing hazardous travel conditions. Winter Storm Warnings have been issued. Thunderstorms and moderate to heavy rainfall are expected across portions of eastern Texas into Louisiana on Sunday. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Mostly Cloudy

56°F

13°C

Humidity 83%
Wind Speed W 5 MPH
Barometer 29.63 in (1003.39 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 13 Nov 04:54 PM PST
Extended Forecast for

4 Miles E Saint Helena CA

  • This Afternoon

    This Afternoon: A 20 percent chance of rain.  Mostly sunny, with a steady temperature around 53. South southwest wind around 5 mph.

    High: 53 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A 40 percent chance of rain, mainly before 10pm.  Areas of fog after 7pm.  Otherwise, mostly cloudy, with a low around 41. Calm wind.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Chance Rain
    and Areas Fog
    then Areas
    Fog

  • Saturday

    Saturday: Areas of fog before 11am.  Otherwise, partly sunny, with a high near 61. Calm wind becoming south around 5 mph in the afternoon.

    High: 61 °F

    Areas Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of rain, mainly after 4am.  Patchy fog after 10pm.  Otherwise, cloudy, with a low around 45. Calm wind.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Patchy Fog
    then Chance
    Rain and
    Areas Fog

  • Sunday

    Sunday: Rain, mainly after 10am.  Patchy fog before 7am. High near 57. South wind 6 to 8 mph, with gusts as high as 18 mph.  Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 57 °F

    Rain and
    Patchy Fog

  • Sunday Night

    Sunday Night: Rain, mainly before 10pm.  Areas of fog. Low around 41. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 41 °F

    Rain and
    Areas Fog
    then Slight
    Chance Rain
    and Areas Fog

  • Monday

    Monday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 59.

    High: 59 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 1am. Patchy frost after 5am.  Otherwise, mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear
    then Patchy
    Frost and
    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Patchy frost before 8am.  Otherwise, mostly sunny, with a high near 59.

    High: 59 °F

    Patchy Frost
    and Patchy
    Fog then
    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of rain. Mostly sunny, with a steady temperature around 53. South southwest wind around 5 mph.
Tonight
A 40 percent chance of rain, mainly before 10pm. Areas of fog after 7pm. Otherwise, mostly cloudy, with a low around 41. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Areas of fog before 11am. Otherwise, partly sunny, with a high near 61. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
A 30 percent chance of rain, mainly after 4am. Patchy fog after 10pm. Otherwise, cloudy, with a low around 45. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Rain, mainly after 10am. Patchy fog before 7am. High near 57. South wind 6 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain, mainly before 10pm. Areas of fog. Low around 41. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 59.
Monday Night
Patchy fog after 1am. Patchy frost after 5am. Otherwise, mostly clear, with a low around 35.
Tuesday
Patchy fog before 9am. Patchy frost before 8am. Otherwise, mostly sunny, with a high near 59.
Tuesday Night
Rain, mainly after 10pm. Patchy fog before 10pm. Otherwise, mostly cloudy, with a low around 41.
Wednesday
Rain. Mostly cloudy, with a high near 55.
Wednesday Night
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 39.
Thursday
A chance of rain. Patchy fog. Otherwise, mostly sunny, with a high near 57.
Thursday Night
Patchy fog. Patchy frost. Otherwise, partly cloudy, with a low around 35.
Friday
Patchy fog. Otherwise, sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Saint Helena CA
 38.5°N 122.4°W (Elev. 476 ft)
2:31 pm PST Nov 13, 2026
5pm PST Nov 13, 2026-6pm PST Nov 20, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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