Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. 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 30.3 in (1026.08 mb)
Dewpoint 21°F (-6°C)
Visibility 4.00 mi
Last update 19 Jan 04:35 AM PST
Extended Forecast for

6 Miles WSW Fort Jones CA

  • M.L.King Day

    M.L.King Day: Patchy fog between 10am and 1pm. Patchy freezing fog before 10am.  Otherwise, sunny, with a high near 50. Calm wind.

    High: 50 °F

    Patchy
    Freezing Fog
    and Patchy
    Fog

  • Tonight

    Tonight: Patchy freezing fog. Partly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Patchy
    Freezing Fog

  • Tuesday

    Tuesday: Patchy fog between 10am and 1pm. Patchy freezing fog before 10am.  Otherwise, partly sunny, with a high near 47. Calm wind.

    High: 47 °F

    Patchy
    Freezing Fog
    and Patchy
    Fog

  • Tuesday Night

    Tuesday Night: Patchy fog after 7pm.  Otherwise, mostly cloudy, with a low around 34. Light south wind.

    Low: 34 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 1pm.  Otherwise, partly sunny, with a high near 47. Light and variable wind.

    High: 47 °F

    Patchy Fog

  • Wednesday Night

    Wednesday Night: Patchy fog after 7pm.  Otherwise, partly cloudy, with a low around 33.

    Low: 33 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 1pm.  Otherwise, sunny, with a high near 52.

    High: 52 °F

    Patchy Fog

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

Detailed Forecast

M.L.King Day
Patchy fog between 10am and 1pm. Patchy freezing fog before 10am. Otherwise, sunny, with a high near 50. Calm wind.
Tonight
Patchy freezing fog. Partly cloudy, with a low around 31. Calm wind.
Tuesday
Patchy fog between 10am and 1pm. Patchy freezing fog before 10am. Otherwise, partly sunny, with a high near 47. Calm wind.
Tuesday Night
Patchy fog after 7pm. Otherwise, mostly cloudy, with a low around 34. Light south wind.
Wednesday
Patchy fog before 1pm. Otherwise, partly sunny, with a high near 47. Light and variable wind.
Wednesday Night
Patchy fog after 7pm. Otherwise, partly cloudy, with a low around 33.
Thursday
Patchy fog before 1pm. Otherwise, sunny, with a high near 52.
Thursday Night
Mostly clear, with a low around 31.
Friday
Sunny, with a high near 51.
Friday Night
Mostly clear, with a low around 33.
Saturday
Mostly sunny, with a high near 51.
Saturday Night
Mostly cloudy, with a low around 30.
Sunday
A slight chance of rain. Snow level 4900 feet rising to 5600 feet in the afternoon. Partly sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles WSW Fort Jones CA
 41.58°N 122.97°W (Elev. 2946 ft)
3:41 am PST Jan 19, 2026
4am PST Jan 19, 2026-6pm PST Jan 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database