Extreme Heat Across the Southern U.S.; Severe Thunderstorms and Heavy Rain in the Northern Plains and Upper Midwest

Dangerous heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms will produce damaging winds and heavy rainfall over portions of the northern/central Plains into the mid/upper-Mississippi Valleys today. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

93°F

34°C

Humidity 17%
Wind Speed W 4 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 30 Jul 04:53 PM PDT
Extended Forecast for

Montague CA

  • Tonight

    Tonight: Clear, with a low around 54. North wind 10 to 15 mph becoming light  after midnight. Winds could gust as high as 24 mph.

    Low: 54 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 98. Light and variable wind.

    High: 98 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 57. North northwest wind 5 to 9 mph becoming calm  after midnight. Winds could gust as high as 21 mph.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 91. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 91 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 51. North wind 13 to 18 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 30 mph.

    Low: 51 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 49.

    Low: 49 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 55.

    Low: 55 °F

    Clear

Detailed Forecast

Tonight
Clear, with a low around 54. North wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 24 mph.
Friday
Sunny and hot, with a high near 98. Light and variable wind.
Friday Night
Mostly clear, with a low around 57. North northwest wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 21 mph.
Saturday
Sunny, with a high near 91. Calm wind becoming north northwest around 5 mph in the afternoon.
Saturday Night
Clear, with a low around 51. North wind 13 to 18 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 30 mph.
Sunday
Sunny, with a high near 89.
Sunday Night
Clear, with a low around 49.
Monday
Sunny and hot, with a high near 96.
Monday Night
Clear, with a low around 55.
Tuesday
Sunny and hot, with a high near 99.
Tuesday Night
Clear, with a low around 60.
Wednesday
Sunny and hot, with a high near 97.
Wednesday Night
Clear, with a low around 59.
Thursday
Sunny and hot, with a high near 97.
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ABOUT THIS FORECAST

 
Point Forecast:
Montague CA
 41.74°N 122.53°W (Elev. 2589 ft)
4:40 pm PDT Jul 30, 2026
5pm PDT Jul 30, 2026-6pm PDT Aug 6, 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