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

Showers and Thunderstorms in the Southwest and Ohio Valley; Mountain Snow in the Northeast

Showers and thunderstorms, along with high-elevation snow, will begin to develop over parts of the Southwest late tonight and is expected to continue through Wednesday morning. Mountain snow over parts the Northeast will continue through Tuesday. A few strong to severe storms and heavy rainfall are possible across portions of the Lower Ohio Valley Tuesday. Read More >

Current conditions at

STONYFORD (SYWC1)

Lat: 39.35523°NLon: 122.65831°WElev: 1540.0ft.

NA

44°F

7°C

Humidity 94%
Wind Speed W 1 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 18 Nov 01:26 AM PST
Extended Forecast for

20 Miles NNE Lakeport CA

  • Overnight

    Overnight: Widespread fog, mainly after 3am. Otherwise, partly cloudy, with a steady temperature around 36. North northeast wind around 10 mph.

    Low: 36 °F

    Fog

  • Tuesday

    Tuesday: Sunny, with a high near 44. North wind 5 to 7 mph becoming calm in the morning.

    High: 44 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a steady temperature around 40. North wind 3 to 6 mph.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers after 4pm. Partly sunny, with a high near 39. Northeast wind around 6 mph becoming south southeast in the afternoon.

    High: 39 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers, mainly after 10pm. Low around 35. South southwest wind 8 to 10 mph. Chance of precipitation is 80%.

    Low: 35 °F

    Showers

  • Thursday

    Thursday: Rain and snow showers likely, becoming all snow after 7am. Mostly cloudy, with a high near 38. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 38 °F

    Rain/Snow
    Likely then
    Snow Showers
    Likely

  • Thursday Night

    Thursday Night: A slight chance of rain and snow showers before 10pm. Partly cloudy, with a low around 35. Chance of precipitation is 20%.

    Low: 35 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Clear

  • Friday

    Friday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Overnight
Widespread fog, mainly after 3am. Otherwise, partly cloudy, with a steady temperature around 36. North northeast wind around 10 mph.
Tuesday
Sunny, with a high near 44. North wind 5 to 7 mph becoming calm in the morning.
Tuesday Night
Partly cloudy, with a steady temperature around 40. North wind 3 to 6 mph.
Wednesday
A 30 percent chance of showers after 4pm. Partly sunny, with a high near 39. Northeast wind around 6 mph becoming south southeast in the afternoon.
Wednesday Night
Showers, mainly after 10pm. Low around 35. South southwest wind 8 to 10 mph. Chance of precipitation is 80%.
Thursday
Rain and snow showers likely, becoming all snow after 7am. Mostly cloudy, with a high near 38. Chance of precipitation is 70%. Little or no snow accumulation expected.
Thursday Night
A slight chance of rain and snow showers before 10pm. Partly cloudy, with a low around 35. Chance of precipitation is 20%.
Friday
Sunny, with a high near 45.
Friday Night
Mostly clear, with a low around 41.
Saturday
Sunny, with a high near 49.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Mostly sunny, with a high near 48.
Sunday Night
Partly cloudy, with a low around 41.
Monday
A slight chance of showers. Partly sunny, with a high near 43.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
20 Miles NNE Lakeport CA
 39.28°N 122.72°W (Elev. 5381 ft)
Last Update:
1:21 am PST Nov 18, 2025
Forecast Valid:
2am PST Nov 18, 2025-6pm PST Nov 24, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation