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

Above Average Temperatures in the West; Winter Weather Returns to the Upper Midwest and Great Lakes

Well above average temperatures will continue across the West this week, potentially breaking some daily high temperature records. A storm system dropping south out of Canada will bring a wintry mix to the Upper Midwest and Great Lakes Tuesday, pushing into the Central Appalachians and interior Northeast on Wednesday. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

23°F

-5°C

Humidity 95%
Wind Speed N 0 MPH
Barometer 30.47 in (1031.83 mb)
Dewpoint 22°F (-6°C)
Visibility 9.00 mi
Last update 13 Jan 01:53 AM PST
Extended Forecast for

Montague CA

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly clear, with a low around 24. Calm wind.

    Low: 24 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, sunny, with a high near 47. Calm wind.

    High: 47 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog. Otherwise, mostly clear, with a low around 26. Calm wind.

    Low: 26 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 10am. Otherwise, sunny, with a high near 50. Light north northeast wind.

    High: 50 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog before 10pm. Otherwise, mostly clear, with a low around 28. East wind 3 to 6 mph.

    Low: 28 °F

    Patchy Fog
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 29.

    Low: 29 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 28.

    Low: 28 °F

    Clear

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly clear, with a low around 24. Calm wind.
Tuesday
Patchy fog before 9am. Otherwise, sunny, with a high near 47. Calm wind.
Tuesday Night
Patchy fog. Otherwise, mostly clear, with a low around 26. Calm wind.
Wednesday
Patchy fog before 10am. Otherwise, sunny, with a high near 50. Light north northeast wind.
Wednesday Night
Patchy fog before 10pm. Otherwise, mostly clear, with a low around 28. East wind 3 to 6 mph.
Thursday
Sunny, with a high near 56.
Thursday Night
Clear, with a low around 29.
Friday
Sunny, with a high near 55.
Friday Night
Clear, with a low around 28.
Saturday
Sunny, with a high near 55.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 31.
M.L.King Day
Mostly sunny, with a high near 56.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Montague CA
 41.72°N 122.53°W (Elev. 2598 ft)
Last Update:
1:52 am PST Jan 13, 2026
Forecast Valid:
2am PST Jan 13, 2026-6pm PST Jan 19, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation