Strong Atmospheric River Bringing Heavy Rain to the Pacific Northwest; Areas of Snow in the North-Central and Eastern U.S.

A strong atmospheric river will bring prolonged heavy rainfall along with gusty winds to the Pacific Northwest through much of this week. The heavy rainfall may lead to widespread urban and river flooding. Accumulating snow is expected over parts of the central Appalachians and Mid-Atlantic today as well as the Upper Midwest and the Upper Great Lakes this evening into Tuesday. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

55°F

13°C

Humidity 59%
Wind Speed S 4 MPH
Barometer 30.3 in (1026.08 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 08 Dec 02:53 PM PST
Extended Forecast for

6 Miles ENE Montague CA

  • Tonight

    Tonight: Partly cloudy, with a low around 34. Calm wind becoming east southeast 5 to 7 mph in the evening.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 55. Light and variable wind becoming southwest around 5 mph in the morning.

    High: 55 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 5am.  Otherwise, partly cloudy, with a low around 36. Southeast wind 3 to 6 mph.

    Low: 36 °F

    Partly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 56. Calm wind.

    High: 56 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 34. Calm wind.

    Low: 34 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 34. Calm wind becoming east southeast 5 to 7 mph in the evening.
Tuesday
Mostly sunny, with a high near 55. Light and variable wind becoming southwest around 5 mph in the morning.
Tuesday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 36. Southeast wind 3 to 6 mph.
Wednesday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 56. Calm wind.
Wednesday Night
Mostly clear, with a low around 34. Calm wind.
Thursday
Sunny, with a high near 56.
Thursday Night
Mostly clear, with a low around 33.
Friday
Sunny, with a high near 55.
Friday Night
Mostly clear, with a low around 33.
Saturday
Mostly sunny, with a high near 55.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Partly sunny, with a high near 52.
Sunday Night
Mostly cloudy, with a low around 36.
Monday
A chance of rain. Partly sunny, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ENE Montague CA
 41.75°N 122.42°W (Elev. 3094 ft)
2:21 pm PST Dec 8, 2025
3pm PST Dec 8, 2025-6pm PST Dec 15, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database