Severe Thunderstorm and Heavy Rainfall Threat Tonight; Heat Continues on Tuesday Across the Eastern U.S.

Severe weather and flash flooding threats continue across the Central Plains and Midwest into tonight. Very large hail, strong tornadoes and damaging winds are expected. An early season heat wave will continue to challenge temperature records across the eastern U.S. through Wednesday. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

50°F

10°C

Humidity 46%
Wind Speed NNW 9 MPH
Barometer 30.16 in (1021.34 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 18 May 11:00 PM PDT
Extended Forecast for

Montague CA

  • Tonight

    Tonight: Clear, with a low around 36. Light north northwest wind.

    Low: 36 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. Calm wind becoming north 5 to 8 mph in the afternoon.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42. North wind 6 to 11 mph becoming light north northeast  in the evening. Winds could gust as high as 26 mph.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 82. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45. North wind 11 to 16 mph becoming light  after midnight. Winds could gust as high as 30 mph.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Friday Night

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

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 36. Light north northwest wind.
Tuesday
Sunny, with a high near 78. Calm wind becoming north 5 to 8 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 42. North wind 6 to 11 mph becoming light north northeast in the evening. Winds could gust as high as 26 mph.
Wednesday
Sunny, with a high near 82. Calm wind becoming north northwest around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 45. North wind 11 to 16 mph becoming light after midnight. Winds could gust as high as 30 mph.
Thursday
Sunny, with a high near 86.
Thursday Night
Mostly clear, with a low around 48.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 49.
Saturday
Sunny, with a high near 87.
Saturday Night
Mostly clear, with a low around 49.
Sunday
Sunny, with a high near 86.
Sunday Night
Mostly clear, with a low around 46.
Memorial Day
Sunny, with a high near 79.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Montague CA
 41.72°N 122.53°W (Elev. 2598 ft)
10:40 pm PDT May 18, 2026
11pm PDT May 18, 2026-6pm PDT May 25, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database