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

Tracking Areas of Fire Weather, Winter Weather, and Severe Weather Thursday

Continuation of gusty winds and low relative humidity will bring additional periods of critical fire weather to the southern Plains Thursday and Friday. Another Pacific storm will continue gusty winds and heavy snow over the western mountains into Thursday. Severe thunderstorms are possible across parts of the middle Mississippi into lower Ohio Valleys Thursday afternoon into early evening. Read More >

Hazardous Weather Conditions

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Overcast

31°F

-1°C

Humidity 85%
Wind Speed N 0 MPH
Barometer 29.74 in (1007.11 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 18 Feb 10:53 PM PST
Extended Forecast for

Montague CA

Winter Weather Advisory February 18, 11:06pm until February 19, 10:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory February 18, 11:06pm until February 19, 10:00am

    NOW until 10:00am Thu

    Winter Weather Advisory

  • Tonight

    Low: 21 °F

    Snow Likely

  • Thursday

    Thursday: Snow likely, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 38. North northwest wind 3 to 7 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 38 °F

    Snow Likely
    then Chance
    Snow

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 17. Light and variable wind.

    Low: 17 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 39. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 39 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow after 10pm. Mostly cloudy, with a low around 21. Southeast wind 7 to 9 mph.

    Low: 21 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: A slight chance of snow before 10am, then a slight chance of rain and snow between 10am and 1pm, then a slight chance of rain after 1pm. Snow level rising to 3200 feet in the afternoon. Mostly cloudy, with a high near 43. Chance of precipitation is 20%.

    High: 43 °F

    Slight Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A chance of rain before 7pm, then a chance of rain and snow between 7pm and 10pm, then rain likely after 10pm. Snow level 3500 feet. Mostly cloudy, with a low around 30. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 30 °F

    Chance
    Rain/Snow
    then Rain
    Likely

  • Sunday

    Sunday: Rain. Snow level 4000 feet rising to 4700 feet in the afternoon. Mostly cloudy, with a high near 46. Breezy.

    High: 46 °F

    Rain and
    Breezy

Detailed Forecast

Tonight
Snow likely, mainly after 3am. Cloudy, with a low around 21. South wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 70%. Total nighttime snow accumulation of less than a half inch possible.
Thursday
Snow likely, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 38. North northwest wind 3 to 7 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
Partly cloudy, with a low around 17. Light and variable wind.
Friday
Partly sunny, with a high near 39. Calm wind becoming south 5 to 7 mph in the afternoon.
Friday Night
A 20 percent chance of snow after 10pm. Mostly cloudy, with a low around 21. Southeast wind 7 to 9 mph.
Saturday
A slight chance of snow before 10am, then a slight chance of rain and snow between 10am and 1pm, then a slight chance of rain after 1pm. Snow level rising to 3200 feet in the afternoon. Mostly cloudy, with a high near 43. Chance of precipitation is 20%.
Saturday Night
A chance of rain before 7pm, then a chance of rain and snow between 7pm and 10pm, then rain likely after 10pm. Snow level 3500 feet. Mostly cloudy, with a low around 30. Chance of precipitation is 60%. Little or no snow accumulation expected.
Sunday
Rain. Snow level 4000 feet rising to 4700 feet in the afternoon. Mostly cloudy, with a high near 46. Breezy.
Sunday Night
Rain. Snow level 5200 feet. Cloudy, with a low around 34.
Monday
Rain. Snow level 4900 feet. Cloudy, with a high near 47.
Monday Night
Rain, possibly mixed with snow. Snow level 4200 feet. Mostly cloudy, with a low around 30.
Tuesday
Rain and snow likely. Snow level 3600 feet rising to 4200 feet in the afternoon. Mostly cloudy, with a high near 48.
Tuesday Night
Rain and snow likely. Snow level 4000 feet lowering to 3400 feet after midnight . Mostly cloudy, with a low around 28.
Wednesday
A chance of rain and snow. Snow level 3000 feet rising to 3900 feet in the afternoon. Partly sunny, with a high near 48.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Montague CA
 41.72°N 122.53°W (Elev. 2598 ft)
Last Update:
10:17 pm PST Feb 18, 2026
Forecast Valid:
11pm PST Feb 18, 2026-6pm PST Feb 25, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation