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

50°F

10°C

Humidity 46%
Wind Speed NNE 12 MPH
Barometer 30.16 in (1021.34 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 21 Mar 08:15 PM PDT
Extended Forecast for

4 Miles NE Montague CA

  • Tonight

    Tonight: Widespread frost, mainly after 2am.  Otherwise, partly cloudy, with a low around 30. North wind 8 to 13 mph becoming light north northwest  after midnight. Winds could gust as high as 20 mph.

    Low: 30 °F

    Frost

  • Sunday

    Sunday: Widespread frost before 11am.  Otherwise, mostly sunny, with a high near 69. Light and variable wind.

    High: 69 °F

    Frost then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Areas of frost after 5am.  Otherwise, partly cloudy, with a low around 35. Light and variable wind becoming north northwest around 5 mph.

    Low: 35 °F

    Partly Cloudy
    then Areas
    Frost

  • Monday

    Monday: Areas of frost before 8am.  Otherwise, mostly sunny, with a high near 71. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 71 °F

    Areas Frost
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 40. West wind 6 to 9 mph becoming south in the evening.

    Low: 40 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Tonight
Widespread frost, mainly after 2am. Otherwise, partly cloudy, with a low around 30. North wind 8 to 13 mph becoming light north northwest after midnight. Winds could gust as high as 20 mph.
Sunday
Widespread frost before 11am. Otherwise, mostly sunny, with a high near 69. Light and variable wind.
Sunday Night
Areas of frost after 5am. Otherwise, partly cloudy, with a low around 35. Light and variable wind becoming north northwest around 5 mph.
Monday
Areas of frost before 8am. Otherwise, mostly sunny, with a high near 71. Calm wind becoming west southwest around 5 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 40. West wind 6 to 9 mph becoming south in the evening.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
Partly sunny, with a high near 68.
Wednesday Night
Partly cloudy, with a low around 32.
Thursday
Mostly sunny, with a high near 66.
Thursday Night
Partly cloudy, with a low around 32.
Friday
Mostly sunny, with a high near 69.
Friday Night
Partly cloudy, with a low around 34.
Saturday
Sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Montague CA
 41.77°N 122.48°W (Elev. 2612 ft)
4:40 pm PDT Mar 21, 2026
8pm PDT Mar 21, 2026-6pm PDT Mar 28, 2026
 
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Additional Resources

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