Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

34°F

1°C

Humidity 86%
Wind Speed NW 3 MPH
Barometer 30.23 in (1023.71 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 20 Mar 07:00 AM PDT
Extended Forecast for

Montague CA

  • Today

    Today: Mostly sunny, with a high near 79. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 47. North wind around 6 mph becoming calm  in the evening.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 68. Light and variable wind becoming north 10 to 15 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 68 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 32. North wind 12 to 17 mph becoming light  after midnight. Winds could gust as high as 26 mph.

    Low: 32 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 68. Light north wind.

    High: 68 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 79. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Tonight
Partly cloudy, with a low around 47. North wind around 6 mph becoming calm in the evening.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 68. Light and variable wind becoming north 10 to 15 mph in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
Mostly clear, with a low around 32. North wind 12 to 17 mph becoming light after midnight. Winds could gust as high as 26 mph.
Sunday
Mostly sunny, with a high near 68. Light north wind.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Mostly sunny, with a high near 72.
Monday Night
Mostly cloudy, with a low around 44.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 43.
Wednesday
Mostly sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
Montague CA
 41.72°N 122.53°W (Elev. 2598 ft)
4:41 am PDT Mar 20, 2026
7am PDT Mar 20, 2026-6pm PDT Mar 26, 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