Heat Persists in the South Central U.S. and Southwest; Heavy rains in the Desert Southwest and Central Plains

Sweltering heat remains across the South-Central Plains, Lower/Middle Mississippi Valley, and the Southwest this week with limited nighttime relief. Thunderstorms will bring heavy rainfall leading to localized flash flooding in portions of the Desert Southwest and central Plains. Isolated strong to severe thunderstorms are possible across portions of the central Plains into the Northeast. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

75°F

24°C

Humidity 33%
Wind Speed N 0 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 08 Sep 07:35 PM PDT
Extended Forecast for

Montague CA

  • Tonight

    Tonight: Mostly clear, with a low around 52. North wind around 6 mph becoming calm  after midnight.

    Low: 52 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91. Calm wind.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 55. North wind 3 to 6 mph.

    Low: 55 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 89. Light northwest wind.

    High: 89 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53. West northwest wind 8 to 13 mph becoming light and variable  in the evening. Winds could gust as high as 20 mph.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 52. North wind around 6 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 91. Calm wind.
Wednesday Night
Mostly clear, with a low around 55. North wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 89. Light northwest wind.
Thursday Night
Mostly clear, with a low around 53. West northwest wind 8 to 13 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Friday
Sunny, with a high near 84.
Friday Night
Mostly clear, with a low around 47.
Saturday
Sunny, with a high near 70.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Sunny, with a high near 72.
Sunday Night
Clear, with a low around 46.
Monday
Sunny, with a high near 75.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
Montague CA
 41.74°N 122.53°W (Elev. 2589 ft)
4:40 pm PDT Sep 8, 2026
7pm PDT Sep 8, 2026-6pm PDT Sep 15, 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