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.

Clear

25°F

-4°C

Humidity 100%
Wind Speed ESE 4 MPH
Barometer 30.25 in (1024.38 mb)
Dewpoint 25°F (-4°C)
Visibility 9.00 mi
Wind Chill20°F (-7°C)
Last update 20 Jan 01:20 AM PST
Extended Forecast for

5 Miles W Fort Jones CA

  • Overnight

    Overnight: Patchy fog before 5am. Patchy freezing fog.  Otherwise, partly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Patchy
    Freezing Fog
    and Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Patchy freezing fog before 10am.  Otherwise, mostly sunny, with a high near 47. Calm wind.

    High: 47 °F

    Patchy
    Freezing Fog
    and Patchy
    Fog then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 10pm.  Otherwise, mostly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 9am.  Otherwise, partly sunny, with a high near 48. Calm wind.

    High: 48 °F

    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 35. Light south wind.

    Low: 35 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 10am.  Otherwise, sunny, with a high near 51.

    High: 51 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

  • Friday Night

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

    Low: 33 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog before 5am. Patchy freezing fog. Otherwise, partly cloudy, with a low around 33. Calm wind.
Tuesday
Patchy fog before 9am. Patchy freezing fog before 10am. Otherwise, mostly sunny, with a high near 47. Calm wind.
Tuesday Night
Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 34. Calm wind.
Wednesday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 48. Calm wind.
Wednesday Night
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 35. Light south wind.
Thursday
Patchy fog before 10am. Otherwise, sunny, with a high near 51.
Thursday Night
Mostly clear, with a low around 32.
Friday
Sunny, with a high near 50.
Friday Night
Mostly clear, with a low around 33.
Saturday
Mostly sunny, with a high near 49.
Saturday Night
Mostly cloudy, with a low around 30.
Sunday
Partly sunny, with a high near 50.
Sunday Night
Mostly cloudy, with a low around 32.
Monday
Partly sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Fort Jones CA
 41.61°N 122.94°W (Elev. 2999 ft)
1:36 am PST Jan 20, 2026
1am PST Jan 20, 2026-6pm PST Jan 26, 2026
 
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Additional Resources

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Hourly Weather Forecast

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