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

28°F

-2°C

Humidity 92%
Wind Speed N 0 MPH
Barometer 30.2 in (1022.69 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 21 Jan 06:00 AM PST
Extended Forecast for

4 Miles NE Montague CA

  • Today

    Today: Patchy fog before 10am.  Otherwise, mostly cloudy, with a high near 51. Calm wind.

    High: 51 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Tonight

    Tonight: Patchy fog after 10pm.  Otherwise, mostly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Patchy Fog

  • Thursday

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

    High: 52 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 23. Light east northeast wind.

    Low: 23 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 51. Calm wind becoming north around 5 mph in the afternoon.

    High: 51 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 19.

    Low: 19 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 18.

    Low: 18 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

Detailed Forecast

Today
Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 51. Calm wind.
Tonight
Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 26. Calm wind.
Thursday
Patchy fog before 10am. Otherwise, sunny, with a high near 52. Calm wind.
Thursday Night
Mostly clear, with a low around 23. Light east northeast wind.
Friday
Sunny, with a high near 51. Calm wind becoming north around 5 mph in the afternoon.
Friday Night
Clear, with a low around 19.
Saturday
Sunny, with a high near 48.
Saturday Night
Mostly clear, with a low around 18.
Sunday
Partly sunny, with a high near 47.
Sunday Night
Mostly cloudy, with a low around 24.
Monday
Partly sunny, with a high near 50.
Monday Night
Partly cloudy, with a low around 26.
Tuesday
Partly sunny, with a high near 52.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Montague CA
 41.77°N 122.48°W (Elev. 2612 ft)
5:01 am PST Jan 21, 2026
6am PST Jan 21, 2026-6pm PST Jan 27, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database