Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

36°F

2°C

Humidity 100%
Wind Speed N 4 MPH
Barometer 30.32 in (1026.75 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 09 Dec 11:00 PM PST
Extended Forecast for

4 Miles W Yreka CA

  • Tonight

    Tonight: Partly cloudy, with a low around 41. Light south wind.

    Low: 41 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 56. Light and variable wind.

    High: 56 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 38. South southwest wind around 5 mph becoming calm  after midnight.

    Low: 38 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 54. Calm wind.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 37. Calm wind.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 41. Light south wind.
Wednesday
Sunny, with a high near 56. Light and variable wind.
Wednesday Night
Mostly clear, with a low around 38. South southwest wind around 5 mph becoming calm after midnight.
Thursday
Sunny, with a high near 54. Calm wind.
Thursday Night
Mostly clear, with a low around 37. Calm wind.
Friday
Sunny, with a high near 53.
Friday Night
Mostly clear, with a low around 38.
Saturday
Sunny, with a high near 54.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Mostly sunny, with a high near 51.
Sunday Night
A slight chance of rain. Mostly cloudy, with a low around 40.
Monday
A chance of rain. Partly sunny, with a high near 50.
Monday Night
A chance of rain. Mostly cloudy, with a low around 42.
Tuesday
A chance of rain. Partly sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Yreka CA
 41.73°N 122.71°W (Elev. 3399 ft)
10:36 pm PST Dec 9, 2025
11pm PST Dec 9, 2025-6pm PST Dec 16, 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