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

Severe Thunderstorms and Heavy Rainfall in the Ohio Valley and Great Lakes; Winter Weather in the Northern Tier

A slow moving front extending from the Great Lakes region into the Plains will bring snow, wintry mix, and ice accumulation north of the front from the Upper Midwest into New England, and severe weather and heavy rain south of the front. Scattered severe thunderstorms with damaging gusts, severe hail, and heavy rain are expected across parts of the Great Lakes/Midwest through tonight. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Overcast

61°F

16°C

Humidity 44%
Wind Speed SSE 19 MPH
Barometer 29.77 in (1008.13 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 31 Mar 04:20 PM PDT
Extended Forecast for

Montague CA

  • This Afternoon

    This Afternoon: A 50 percent chance of rain. Partly sunny, with a high near 60. Southwest wind around 14 mph, with gusts as high as 21 mph.

    High: 60 °F

    Chance Rain

  • Tonight

    Tonight: Rain likely, mainly after 3am. Increasing clouds, with a low around 39. West southwest wind 5 to 11 mph becoming south southeast after midnight. Chance of precipitation is 60%.

    Low: 39 °F

    Chance Rain
    then Rain
    Likely

  • Wednesday

    Wednesday: Rain, mainly before 5pm, then showers and possibly a thunderstorm after 5pm. Snow level 5700 feet. High near 53. Southwest wind 9 to 14 mph increasing to 16 to 21 mph in the morning. Winds could gust as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 53 °F

    Showers

  • Wednesday Night

    Wednesday Night: Rain before 11pm, then rain and snow likely between 11pm and 5am, then snow likely after 5am. Some thunder is also possible. Snow level 5200 feet lowering to 2700 feet after midnight . Low around 31. West southwest wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 31 °F

    Rain/Snow
    then
    Rain/Snow
    Likely

  • Thursday

    Thursday: A chance of snow before 8am, then a chance of rain and snow between 8am and 2pm, then a slight chance of rain after 2pm. Snow level rising to 3900 feet in the afternoon. Partly sunny, with a high near 51. South southwest wind 5 to 9 mph becoming northwest in the afternoon. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 51 °F

    Chance
    Rain/Snow
    then Slight
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 32.

    Low: 32 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

Detailed Forecast

This Afternoon
A 50 percent chance of rain. Partly sunny, with a high near 60. Southwest wind around 14 mph, with gusts as high as 21 mph.
Tonight
Rain likely, mainly after 3am. Increasing clouds, with a low around 39. West southwest wind 5 to 11 mph becoming south southeast after midnight. Chance of precipitation is 60%.
Wednesday
Rain, mainly before 5pm, then showers and possibly a thunderstorm after 5pm. Snow level 5700 feet. High near 53. Southwest wind 9 to 14 mph increasing to 16 to 21 mph in the morning. Winds could gust as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Rain before 11pm, then rain and snow likely between 11pm and 5am, then snow likely after 5am. Some thunder is also possible. Snow level 5200 feet lowering to 2700 feet after midnight . Low around 31. West southwest wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Thursday
A chance of snow before 8am, then a chance of rain and snow between 8am and 2pm, then a slight chance of rain after 2pm. Snow level rising to 3900 feet in the afternoon. Partly sunny, with a high near 51. South southwest wind 5 to 9 mph becoming northwest in the afternoon. Chance of precipitation is 50%. Little or no snow accumulation expected.
Thursday Night
Mostly clear, with a low around 25.
Friday
Sunny, with a high near 64.
Friday Night
Clear, with a low around 32.
Saturday
Sunny, with a high near 71.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 75.
Sunday Night
Partly cloudy, with a low around 41.
Monday
Mostly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 70.
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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:
12:22 pm PDT Mar 31, 2026
Forecast Valid:
4pm PDT Mar 31, 2026-6pm PDT Apr 7, 2026
 
Forecast Discussion
 
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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