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

Rapid Warm-Up Forecast Across Much of the Lower 48 Today and Tuesday

Most of the U.S. starts the week calm and unseasonably warm. The Heartland will be warmest, with highs 25–30° above average. Only the Gulf Coast stays chilly. Rain today is limited to western Washington while lake effect snow continues east of Lake Ontario. Cooler air returns after Tuesday, bringing a wintry mix to the Midwest and Northeast by Wednesday. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Mist

21°F

-6°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.5 in (1032.85 mb)
Dewpoint 21°F (-6°C)
Visibility 1.25 mi
Last update 12 Jan 05:00 AM PST
Extended Forecast for

Montague CA

  • Today

    Today: Mostly sunny, with a high near 43. Calm wind.

    High: 43 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 25. East wind 3 to 5 mph.

    Low: 25 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 44. Light east wind.

    High: 44 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 27. East southeast wind 3 to 5 mph.

    Low: 27 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 54. Light and variable wind.

    High: 54 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 28.

    Low: 28 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 43. Calm wind.
Tonight
Mostly clear, with a low around 25. East wind 3 to 5 mph.
Tuesday
Sunny, with a high near 44. Light east wind.
Tuesday Night
Mostly clear, with a low around 27. East southeast wind 3 to 5 mph.
Wednesday
Sunny, with a high near 54. Light and variable wind.
Wednesday Night
Mostly clear, with a low around 28.
Thursday
Sunny, with a high near 56.
Thursday Night
Clear, with a low around 28.
Friday
Sunny, with a high near 55.
Friday Night
Clear, with a low around 29.
Saturday
Sunny, with a high near 56.
Saturday Night
Mostly clear, with a low around 30.
Sunday
Sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Montague CA
 41.72°N 122.53°W (Elev. 2598 ft)
Last Update:
3:41 am PST Jan 12, 2026
Forecast Valid:
5am PST Jan 12, 2026-6pm PST Jan 18, 2026
 
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Additional Resources

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