Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Mostly Cloudy

39°F

4°C

Humidity 93%
Wind Speed SE 3 MPH
Barometer 30.38 in (1028.79 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 08 Dec 01:35 AM PST
Extended Forecast for

10 Miles NNE Montague CA

  • Overnight

    Overnight: Patchy fog.  Otherwise, mostly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Patchy Fog

  • Monday

    Monday: Patchy fog before noon.  Otherwise, mostly sunny, with a high near 54. South wind 3 to 5 mph.

    High: 54 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31. South southwest wind around 7 mph.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 55. South wind 6 to 9 mph.

    High: 55 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 33. South wind around 5 mph.

    Low: 33 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 58.

    High: 58 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 3am.  Otherwise, partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 11am.  Otherwise, sunny, with a high near 59.

    High: 59 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 31. Calm wind.
Monday
Patchy fog before noon. Otherwise, mostly sunny, with a high near 54. South wind 3 to 5 mph.
Monday Night
Partly cloudy, with a low around 31. South southwest wind around 7 mph.
Tuesday
Mostly sunny, with a high near 55. South wind 6 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 33. South wind around 5 mph.
Wednesday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 58.
Wednesday Night
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 32.
Thursday
Patchy fog before 11am. Otherwise, sunny, with a high near 59.
Thursday Night
Mostly clear, with a low around 30.
Friday
Patchy fog before 9am. Otherwise, sunny, with a high near 58.
Friday Night
Mostly clear, with a low around 29.
Saturday
Sunny, with a high near 57.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Partly sunny, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNE Montague CA
 41.86°N 122.45°W (Elev. 2598 ft)
11:06 pm PST Dec 7, 2025
1am PST Dec 8, 2025-6pm PST Dec 14, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database