Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

STONYFORD (SYWC1)

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

NA

61°F

16°C

Humidity 41%
Wind Speed SW 3 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 19 Jan 04:26 PM PST
Extended Forecast for

20 Miles N Clearlake CA

  • Tonight

    Tonight: Widespread haze after 1am. Mostly clear, with a low around 45. North northwest wind around 8 mph.

    Low: 45 °F

    Mostly Clear
    then Haze

  • Tuesday

    Tuesday: Widespread haze before 9am. Partly sunny, with a high near 55. North wind around 7 mph.

    High: 55 °F

    Haze then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 47. Northwest wind around 6 mph.

    Low: 47 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 55. North northeast wind around 6 mph.

    High: 55 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 47. Northwest wind 3 to 6 mph.

    Low: 47 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Tonight
Widespread haze after 1am. Mostly clear, with a low around 45. North northwest wind around 8 mph.
Tuesday
Widespread haze before 9am. Partly sunny, with a high near 55. North wind around 7 mph.
Tuesday Night
Mostly cloudy, with a low around 47. Northwest wind around 6 mph.
Wednesday
Mostly cloudy, with a high near 55. North northeast wind around 6 mph.
Wednesday Night
Mostly cloudy, with a low around 47. Northwest wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 57.
Thursday Night
Mostly clear, with a low around 43.
Friday
Sunny, with a high near 54.
Friday Night
Mostly clear, with a low around 42.
Saturday
Sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 42.
Sunday
Partly sunny, with a high near 51.
Sunday Night
Mostly cloudy, with a low around 43.
Monday
Mostly sunny, with a high near 54.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
20 Miles N Clearlake CA
 39.24°N 122.56°W (Elev. 3199 ft)
1:26 pm PST Jan 19, 2026
5pm PST Jan 19, 2026-6pm PST Jan 26, 2026
 
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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