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

Extreme Heat Lingers; Severe Thunderstorms for Portions of the Plains and Southeast; Heavy Rainfall Threats

Gusty winds and heavy rainfall may impact the Big Island of Hawaii as a nearby tropical system passes west of the islands. From the Southwest U.S., Rockies and across the Gulf Coast, heavy rainfall could lead to isolated flash flooding. Severe thunderstorms are expected for areas of the Plains, Gulf Coast and Southeast through Tuesday. Extreme heat lingers for the southern Plains and Southwest. Read More >

Hazardous Weather Conditions

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

72°F

22°C

Humidity 31%
Wind Speed W 3 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 24 Aug 10:53 AM PDT
Extended Forecast for

5 Miles S Montague CA

Red Flag Warning until August 24, 08:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning until August 24, 08:00pm

    NOW until 8:00pm Mon

    Red Flag Warning

  • Today

    High: 94 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. South wind 5 to 13 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 93. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 93 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 57. South wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 92. Light and variable wind.

    High: 92 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 94. Light and variable wind becoming south southeast 16 to 21 mph in the afternoon. Winds could gust as high as 32 mph.
Tonight
Mostly clear, with a low around 58. South wind 5 to 13 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 93. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 57. South wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Wednesday
Sunny, with a high near 92. Light and variable wind.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Sunny, with a high near 90.
Thursday Night
Mostly clear, with a low around 54.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 53.
Saturday
Sunny, with a high near 86.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Montague CA
 41.65°N 122.54°W (Elev. 2664 ft)
Last Update:
10:40 am PDT Aug 24, 2026
Forecast Valid:
11am PDT Aug 24, 2026-6pm PDT Aug 30, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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