National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Heavy rainfall capable of causing flash flooding will continue to impact Hawaii through Monday. Severe thunderstorms and heavy rain are possible in parts of Texas and the southern Plains and the Upper Great Lakes. Heavy mountain snow continues in California's Sierra Nevada and rain with gusty winds to lower elevations. Super Typhoon Sinlaku will impact the Marianas through midweek. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Overcast

41°F

5°C

Humidity 80%
Wind Speed N 0 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 13 Apr 12:00 AM PDT
Extended Forecast for

Montague CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 36. Light and variable wind.

    Low: 36 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 57. Calm wind becoming north around 6 mph in the afternoon.

    High: 57 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 36. North wind around 6 mph becoming calm in the evening.

    Low: 36 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 63. Calm wind becoming west around 5 mph in the afternoon.

    High: 63 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39. West wind 5 to 14 mph, with gusts as high as 20 mph.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers likely, mainly after 11am. Snow level 4800 feet rising to 5600 feet. Mostly cloudy, with a high near 54. Breezy. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Showers
    Likely and
    Breezy

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers before 11pm. Snow level 4900 feet lowering to 2600 feet after midnight . Mostly cloudy, with a low around 26.

    Low: 26 °F

    Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 36. Light and variable wind.
Monday
Partly sunny, with a high near 57. Calm wind becoming north around 6 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 36. North wind around 6 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 63. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 39. West wind 5 to 14 mph, with gusts as high as 20 mph.
Wednesday
Showers likely, mainly after 11am. Snow level 4800 feet rising to 5600 feet. Mostly cloudy, with a high near 54. Breezy. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
A 50 percent chance of showers before 11pm. Snow level 4900 feet lowering to 2600 feet after midnight . Mostly cloudy, with a low around 26.
Thursday
Sunny, with a high near 52.
Thursday Night
Mostly clear, with a low around 25.
Friday
Sunny, with a high near 63.
Friday Night
Partly cloudy, with a low around 33.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 40.
Sunday
A chance of rain. Snow level 5600 feet. Partly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Montague CA
 41.72°N 122.53°W (Elev. 2598 ft)
Last Update:
11:51 pm PDT Apr 12, 2026
Forecast Valid:
12am PDT Apr 13, 2026-6pm PDT Apr 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation