Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

84°F

29°C

Humidity 20%
Wind Speed S 4 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 27 Aug 01:00 PM PDT
Extended Forecast for

Montague CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 90. Calm wind becoming west northwest around 6 mph.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 54. North northwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 90. Light and variable wind becoming west northwest 9 to 14 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 51. Northwest wind 9 to 14 mph becoming light north  after midnight. Winds could gust as high as 22 mph.

    Low: 51 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 85. Calm wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 85 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 48.

    Low: 48 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 90. Calm wind becoming west northwest around 6 mph.
Tonight
Mostly clear, with a low around 54. North northwest wind 5 to 8 mph becoming calm in the evening.
Friday
Sunny, with a high near 90. Light and variable wind becoming west northwest 9 to 14 mph in the afternoon. Winds could gust as high as 22 mph.
Friday Night
Mostly clear, with a low around 51. Northwest wind 9 to 14 mph becoming light north after midnight. Winds could gust as high as 22 mph.
Saturday
Sunny, with a high near 85. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Saturday Night
Clear, with a low around 48.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 50.
Monday
Sunny, with a high near 89.
Monday Night
Mostly clear, with a low around 51.
Tuesday
Sunny, with a high near 82.
Tuesday Night
A slight chance of rain. Partly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Montague CA
 41.74°N 122.53°W (Elev. 2589 ft)
12:06 pm PDT Aug 27, 2026
1pm PDT Aug 27, 2026-6pm PDT Sep 2, 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