Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

52°F

11°C

Humidity 40%
Wind Speed NNW 4 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 18 Apr 10:20 PM PDT
Extended Forecast for

Montague CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 42. South wind 5 to 8 mph becoming light and variable  in the evening.

    Low: 42 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 71. Breezy, with a north northeast wind 6 to 11 mph becoming south southeast 18 to 23 mph in the morning. Winds could gust as high as 34 mph.

    High: 71 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 47. South wind 8 to 18 mph, with gusts as high as 28 mph.

    Low: 47 °F

    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of rain after 11am.  Partly sunny, with a high near 65. Breezy, with a south southeast wind 14 to 19 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 41 mph.

    High: 65 °F

    Chance Rain
    and Breezy

  • Monday Night

    Monday Night: Rain likely.  Mostly cloudy, with a low around 41. Breezy, with a south wind 17 to 22 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 33 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Rain Likely
    and Breezy

  • Tuesday

    Tuesday: A chance of rain, then showers and possibly a thunderstorm after 11am.  High near 57. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 57 °F

    Showers

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain.  Snow level 6000 feet lowering to 5100 feet after midnight . Mostly cloudy, with a low around 38.

    Low: 38 °F

    Chance Rain

  • Wednesday

    Wednesday: A chance of rain, mainly after 11am.  Snow level 4800 feet rising to 5400 feet in the afternoon. Mostly cloudy, with a high near 56.

    High: 56 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 42. South wind 5 to 8 mph becoming light and variable in the evening.
Sunday
Mostly cloudy, with a high near 71. Breezy, with a north northeast wind 6 to 11 mph becoming south southeast 18 to 23 mph in the morning. Winds could gust as high as 34 mph.
Sunday Night
Mostly cloudy, with a low around 47. South wind 8 to 18 mph, with gusts as high as 28 mph.
Monday
A 30 percent chance of rain after 11am. Partly sunny, with a high near 65. Breezy, with a south southeast wind 14 to 19 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 41 mph.
Monday Night
Rain likely. Mostly cloudy, with a low around 41. Breezy, with a south wind 17 to 22 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A chance of rain, then showers and possibly a thunderstorm after 11am. High near 57. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A 50 percent chance of rain. Snow level 6000 feet lowering to 5100 feet after midnight . Mostly cloudy, with a low around 38.
Wednesday
A chance of rain, mainly after 11am. Snow level 4800 feet rising to 5400 feet in the afternoon. Mostly cloudy, with a high near 56.
Wednesday Night
Mostly cloudy, with a low around 33.
Thursday
Mostly sunny, with a high near 60.
Thursday Night
Mostly clear, with a low around 34.
Friday
Sunny, with a high near 65.
Friday Night
Mostly clear, with a low around 38.
Saturday
Sunny, with a high near 70.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Montague CA
 41.72°N 122.53°W (Elev. 2598 ft)
9:08 pm PDT Apr 18, 2026
10pm PDT Apr 18, 2026-6pm PDT Apr 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