Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

48°F

9°C

Humidity 49%
Wind Speed WNW 3 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 21 Jan 03:35 PM PST
Extended Forecast for

4 Miles NE Montague CA

  • Tonight

    Tonight: Patchy fog after 1am.  Otherwise, mostly cloudy, with a low around 26. Light south wind.

    Low: 26 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 52. Calm wind.

    High: 52 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 1am.  Otherwise, mostly clear, with a low around 23. Calm wind.

    Low: 23 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 10am.  Otherwise, sunny, with a high near 48. Calm wind becoming north northeast around 6 mph in the afternoon.

    High: 48 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Clear, with a low around 17. Northeast wind around 8 mph.

    Low: 17 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 15.

    Low: 15 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 26. Light south wind.
Thursday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 52. Calm wind.
Thursday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 23. Calm wind.
Friday
Patchy fog before 10am. Otherwise, sunny, with a high near 48. Calm wind becoming north northeast around 6 mph in the afternoon.
Friday Night
Clear, with a low around 17. Northeast wind around 8 mph.
Saturday
Sunny, with a high near 48.
Saturday Night
Mostly clear, with a low around 15.
Sunday
Partly sunny, with a high near 47.
Sunday Night
Mostly cloudy, with a low around 23.
Monday
Mostly sunny, with a high near 50.
Monday Night
Partly cloudy, with a low around 25.
Tuesday
Partly sunny, with a high near 52.
Tuesday Night
A slight chance of snow showers. Snow level 5400 feet. Mostly cloudy, with a low around 28.
Wednesday
A slight chance of rain and snow showers. Snow level 5000 feet rising to 5800 feet in the afternoon. Mostly cloudy, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Montague CA
 41.77°N 122.48°W (Elev. 2612 ft)
3:41 pm PST Jan 21, 2026
3pm PST Jan 21, 2026-6pm PST Jan 28, 2026
 
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Additional Resources

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Hourly Weather Forecast

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