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

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

45°F

7°C

Humidity 81%
Wind Speed W 3 MPH
Barometer 30.31 in (1026.41 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 07 Dec 05:35 PM PST
Extended Forecast for

4 Miles N Fort Jones CA

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Patchy Fog

  • Monday

    Monday: Patchy dense fog before noon. Otherwise, mostly sunny, with a high near 54. Calm wind.

    High: 54 °F

    Patchy Dense
    Fog then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34. Southwest wind 7 to 9 mph.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain after 10am. Partly sunny, with a high near 55. West southwest wind around 7 mph.

    High: 55 °F

    Slight Chance
    Rain

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 38. West southwest wind around 6 mph.

    Low: 38 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A 20 percent chance of rain before 10am. Partly sunny, with a high near 57.

    High: 57 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 11am. Otherwise, sunny, with a high near 56.

    High: 56 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 33. Calm wind.
Monday
Patchy dense fog before noon. Otherwise, mostly sunny, with a high near 54. Calm wind.
Monday Night
Partly cloudy, with a low around 34. Southwest wind 7 to 9 mph.
Tuesday
A 20 percent chance of rain after 10am. Partly sunny, with a high near 55. West southwest wind around 7 mph.
Tuesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 38. West southwest wind around 6 mph.
Wednesday
A 20 percent chance of rain before 10am. Partly sunny, with a high near 57.
Wednesday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 36.
Thursday
Patchy fog before 11am. Otherwise, sunny, with a high near 56.
Thursday Night
Mostly clear, with a low around 34.
Friday
Sunny, with a high near 56.
Friday Night
Mostly clear, with a low around 33.
Saturday
Sunny, with a high near 57.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
A slight chance of rain. Mostly sunny, with a high near 56.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Fort Jones CA
 41.67°N 122.84°W (Elev. 3314 ft)
Last Update:
3:41 pm PST Dec 7, 2025
Forecast Valid:
5pm PST Dec 7, 2025-6pm PST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation