Critical Fire Weather in the High Plains; Heavy Snow in the Western Mountains and Northern Plains

Gusty winds and low relative humidity will bring critical fire weather to the central and southern High Plains Wednesday. Two Pacific storms will continue impacting the mountains of the western U.S. into Thursday with gusty winds and heavy snow. Heavy snow and gusty winds will continue to impact the northern Plains into the central Great Lakes Wednesday. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Overcast

29°F

-2°C

Humidity 78%
Wind Speed SE 4 MPH
Barometer 29.64 in (1003.73 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 17 Feb 11:53 PM PST
Extended Forecast for

10 Miles NNE Montague CA

Winter Weather Advisory February 18, 12:02am until February 19, 10:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory February 18, 12:02am until February 19, 10:00am

    NOW until 10:00am Thu

    Winter Weather Advisory

  • Overnight

    Low: 16 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of snow, mainly after 3pm.  Partly sunny, with a high near 37. Calm wind becoming south southwest 5 to 9 mph in the morning.  New snow accumulation of less than a half inch possible.

    High: 37 °F

    Partly Sunny
    then Chance
    Snow

  • Wednesday Night

    Wednesday Night: Snow, mainly after 10pm.  Low around 22. South wind 3 to 6 mph.  Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    Low: 22 °F

    Snow

  • Thursday

    Thursday: Snow, mainly before 10am.  High near 37. Light and variable wind becoming west northwest 5 to 9 mph in the morning.  Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 37 °F

    Snow then
    Chance Snow

  • Thursday Night

    Thursday Night: A 20 percent chance of snow before 10pm.  Partly cloudy, with a low around 16. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 16 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow after 10pm.  Mostly cloudy, with a low around 20.

    Low: 20 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: A chance of snow before 1pm, then a chance of rain and snow between 1pm and 4pm, then a chance of rain after 4pm.  Partly sunny, with a high near 44.

    High: 44 °F

    Chance Snow
    then Chance
    Rain/Snow

Detailed Forecast

Overnight
Partly cloudy, with a low around 16. Calm wind.
Wednesday
A 30 percent chance of snow, mainly after 3pm. Partly sunny, with a high near 37. Calm wind becoming south southwest 5 to 9 mph in the morning. New snow accumulation of less than a half inch possible.
Wednesday Night
Snow, mainly after 10pm. Low around 22. South wind 3 to 6 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Thursday
Snow, mainly before 10am. High near 37. Light and variable wind becoming west northwest 5 to 9 mph in the morning. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Thursday Night
A 20 percent chance of snow before 10pm. Partly cloudy, with a low around 16. Northwest wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 39.
Friday Night
A 20 percent chance of snow after 10pm. Mostly cloudy, with a low around 20.
Saturday
A chance of snow before 1pm, then a chance of rain and snow between 1pm and 4pm, then a chance of rain after 4pm. Partly sunny, with a high near 44.
Saturday Night
A chance of rain before 7pm, then rain likely, possibly mixed with snow. Snow level 3200 feet. Mostly cloudy, with a low around 29.
Sunday
Rain likely, possibly mixed with snow before 10am, then rain. Snow level 3500 feet rising to 4200 feet in the afternoon. Mostly cloudy, with a high near 47.
Sunday Night
Rain, possibly mixed with snow. Snow level 4000 feet. Cloudy, with a low around 31.
Monday
Rain, possibly mixed with snow. Snow level 3800 feet. Mostly cloudy, with a high near 47.
Monday Night
Rain and snow. Snow level 3700 feet lowering to 3100 feet after midnight . Mostly cloudy, with a low around 28.
Tuesday
Rain and snow likely. Snow level 2900 feet rising to 3600 feet in the afternoon. Mostly cloudy, with a high near 46.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNE Montague CA
 41.86°N 122.45°W (Elev. 2598 ft)
9:41 pm PST Feb 17, 2026
12am PST Feb 18, 2026-6pm PST Feb 24, 2026
 
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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