Severe Thunderstorms in Portions of the Mississippi Valley and Great Lakes

A few severe thunderstorms with large hail, are expected across parts of the middle and upper Mississippi River Valley tonight through early morning. Snow and a wintry mix overnight in the Upper Midwest into the Great Lakes can cause hazardous travel conditions. Fire weather concerns continue for a large portion of the central and southern High Plains and Four Corners region this evening. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Mostly Cloudy

49°F

9°C

Humidity 89%
Wind Speed NNE 4 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 30 Mar 08:53 PM PDT
Extended Forecast for

Montague CA

  • Tonight

    Tonight: A 20 percent chance of rain between 11pm and 1am.  Mostly cloudy, with a low around 41. North northeast wind around 5 mph becoming calm  in the evening.

    Low: 41 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: A slight chance of rain before 10am, then a chance of rain after 11am.  Partly sunny, with a high near 62. Calm wind becoming south 5 to 9 mph in the afternoon.  Chance of precipitation is 50%.

    High: 62 °F

    Slight Chance
    Rain then
    Chance Rain

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain.  Mostly cloudy, with a low around 42. South wind 5 to 8 mph becoming calm  in the evening.

    Low: 42 °F

    Chance Rain

  • Wednesday

    Wednesday: Rain.  Snow level 5400 feet. High near 48. South southwest wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph.  Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 48 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain before 2am, then rain likely, possibly mixed with snow.  Snow level 4900 feet lowering to 2900 feet after midnight . Low around 30. Southwest wind 8 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 30 °F

    Rain then
    Rain/Snow
    Likely

  • Thursday

    Thursday: Rain and snow likely before 8am, then snow likely between 8am and 11am, then a chance of rain and snow after 11am.  Snow level 2800 feet. Partly sunny, with a high near 51. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 51 °F

    Rain/Snow
    Likely

  • Thursday Night

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

    Low: 25 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Friday Night

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

    Low: 31 °F

    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of rain between 11pm and 1am. Mostly cloudy, with a low around 41. North northeast wind around 5 mph becoming calm in the evening.
Tuesday
A slight chance of rain before 10am, then a chance of rain after 11am. Partly sunny, with a high near 62. Calm wind becoming south 5 to 9 mph in the afternoon. Chance of precipitation is 50%.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 42. South wind 5 to 8 mph becoming calm in the evening.
Wednesday
Rain. Snow level 5400 feet. High near 48. South southwest wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain before 2am, then rain likely, possibly mixed with snow. Snow level 4900 feet lowering to 2900 feet after midnight . Low around 30. Southwest wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday
Rain and snow likely before 8am, then snow likely between 8am and 11am, then a chance of rain and snow after 11am. Snow level 2800 feet. Partly sunny, with a high near 51. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday Night
Mostly clear, with a low around 25.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 31.
Saturday
Sunny, with a high near 70.
Saturday Night
Mostly clear, with a low around 37.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 40.
Monday
Sunny, with a high near 75.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Montague CA
 41.72°N 122.53°W (Elev. 2598 ft)
4:41 pm PDT Mar 30, 2026
9pm PDT Mar 30, 2026-6pm PDT Apr 6, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database