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 30%
Wind Speed N 0 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 24 Aug 10:15 AM PDT
Extended Forecast for

5 Miles NNE Yreka CA

Red Flag Warning August 24, 11:00am until August 24, 08:00pm
Click here for hazard details and duration
Red Flag Warning

  • Today

    Today: Sunny, with a high near 93. South southeast wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 93 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. South wind 6 to 14 mph becoming northwest in the evening. Winds could gust as high as 22 mph.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 92. Light and variable wind becoming south 5 to 9 mph in the afternoon.

    High: 92 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59. South wind 5 to 8 mph becoming north northwest in the evening.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90. West wind 3 to 5 mph.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 93. South southeast wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.
Tonight
Mostly clear, with a low around 60. South wind 6 to 14 mph becoming northwest in the evening. Winds could gust as high as 22 mph.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 92. Light and variable wind becoming south 5 to 9 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 59. South wind 5 to 8 mph becoming north northwest in the evening.
Wednesday
Sunny, with a high near 90. West wind 3 to 5 mph.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Sunny, with a high near 88.
Thursday Night
Mostly clear, with a low around 57.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 52.
Sunday
Sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNE Yreka CA
 41.8°N 122.58°W (Elev. 3199 ft)
Last Update:
9:02 am PDT Aug 24, 2026
Forecast Valid:
10am PDT Aug 24, 2026-6pm PDT Aug 30, 2026
 
Forecast Discussion
 
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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