Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

74°F

23°C

Humidity 18%
Wind Speed N 3 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 19 May 01:53 PM PDT
Extended Forecast for

Montague CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 78. North wind 5 to 8 mph.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 44. North wind 10 to 15 mph becoming light  in the evening. Winds could gust as high as 28 mph.

    Low: 44 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 81. Light north wind increasing to 6 to 11 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 81 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45. North wind 11 to 16 mph becoming light  in the evening. Winds could gust as high as 31 mph.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 78. North wind 5 to 8 mph.
Tonight
Increasing clouds, with a low around 44. North wind 10 to 15 mph becoming light in the evening. Winds could gust as high as 28 mph.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 81. Light north wind increasing to 6 to 11 mph in the afternoon. Winds could gust as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 45. North wind 11 to 16 mph becoming light in the evening. Winds could gust as high as 31 mph.
Thursday
Sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 49.
Friday
Sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 51.
Saturday
Sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 48.
Memorial Day
Sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Montague CA
 41.72°N 122.53°W (Elev. 2598 ft)
1:51 pm PDT May 19, 2026
2pm PDT May 19, 2026-6pm PDT May 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