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

Heavy Lake Effect Snow; Subfreezing Temperatures in the Eastern U.S.

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. The Arctic front will continue to bring increasing winds to the Northeast that will remain gusty. Subfreezing overnight low temperatures will be found as far south as the Gulf Coast. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

Lat: 41.77375°NLon: 122.46817°WElev: 2644.0ft.

Clear

28°F

-2°C

Humidity 92%
Wind Speed NNW 3 MPH
Barometer 30.4 in (1029.46 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 29 Dec 07:53 PM PST
Extended Forecast for

10 Miles NNE Montague CA

  • Tonight

    Tonight: Widespread freezing fog after 10pm. Mostly clear, with a low around 24. South southeast wind around 6 mph.

    Low: 24 °F

    Freezing Fog

  • Tuesday

    Tuesday: Widespread freezing fog before 11am. Sunny, with a high near 42. Light south wind.

    High: 42 °F

    Freezing Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Widespread freezing fog after 10pm. Partly cloudy, with a low around 25. East wind 3 to 5 mph.

    Low: 25 °F

    Freezing Fog

  • Wednesday

    Wednesday: Widespread freezing fog before 10am. Mostly cloudy, with a high near 41. Light east northeast wind.

    High: 41 °F

    Freezing Fog
    then Mostly
    Cloudy

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 34. Light east wind.

    Low: 34 °F

    Chance Rain

  • New Year's Day

    New Year's Day: Rain likely, mainly after 10am. Mostly cloudy, with a high near 48. Chance of precipitation is 70%.

    High: 48 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 35. Chance of precipitation is 60%.

    Low: 35 °F

    Rain Likely

  • Friday

    Friday: Rain likely, mainly after 10am. Mostly cloudy, with a high near 50.

    High: 50 °F

    Rain Likely

  • Friday Night

    Friday Night: Rain likely. Snow level 6100 feet lowering to 5500 feet after midnight . Mostly cloudy, with a low around 34.

    Low: 34 °F

    Rain Likely

Detailed Forecast

Tonight
Widespread freezing fog after 10pm. Mostly clear, with a low around 24. South southeast wind around 6 mph.
Tuesday
Widespread freezing fog before 11am. Sunny, with a high near 42. Light south wind.
Tuesday Night
Widespread freezing fog after 10pm. Partly cloudy, with a low around 25. East wind 3 to 5 mph.
Wednesday
Widespread freezing fog before 10am. Mostly cloudy, with a high near 41. Light east northeast wind.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 34. Light east wind.
New Year's Day
Rain likely, mainly after 10am. Mostly cloudy, with a high near 48. Chance of precipitation is 70%.
Thursday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 35. Chance of precipitation is 60%.
Friday
Rain likely, mainly after 10am. Mostly cloudy, with a high near 50.
Friday Night
Rain likely. Snow level 6100 feet lowering to 5500 feet after midnight . Mostly cloudy, with a low around 34.
Saturday
Rain likely. Snow level 4900 feet. Mostly cloudy, with a high near 46.
Saturday Night
A chance of rain. Snow level 4600 feet. Mostly cloudy, with a low around 32.
Sunday
A chance of rain and snow. Snow level 4400 feet. Mostly cloudy, with a high near 45.
Sunday Night
A chance of rain. Snow level 4600 feet. Mostly cloudy, with a low around 33.
Monday
A chance of rain. Snow level 4600 feet. Mostly cloudy, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNE Montague CA
 41.86°N 122.45°W (Elev. 2598 ft)
Last Update:
3:41 pm PST Dec 29, 2025
Forecast Valid:
8pm PST Dec 29, 2025-6pm PST Jan 5, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation