Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

87°F

31°C

Humidity 22%
Wind Speed N 13 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 17 Aug 06:53 PM PDT
Extended Forecast for

10 Miles WNW Yreka CA

  • Tonight

    Tonight: Mostly clear, with a low around 59. Northwest wind 5 to 8 mph becoming calm  after midnight.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. Calm wind becoming northwest 5 to 8 mph in the afternoon.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 61. North northwest wind 5 to 9 mph becoming calm  in the evening.

    Low: 61 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 82. Light and variable wind becoming northwest around 5 mph in the afternoon.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62. Northwest wind 5 to 10 mph becoming light north  after midnight. Winds could gust as high as 18 mph.

    Low: 62 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Friday Night

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

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 59. Northwest wind 5 to 8 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 80. Calm wind becoming northwest 5 to 8 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 61. North northwest wind 5 to 9 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 82. Light and variable wind becoming northwest around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 62. Northwest wind 5 to 10 mph becoming light north after midnight. Winds could gust as high as 18 mph.
Thursday
Sunny, with a high near 82.
Thursday Night
Partly cloudy, with a low around 61.
Friday
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 54.
Saturday
Sunny, with a high near 74.
Saturday Night
Clear, with a low around 54.
Sunday
Sunny, with a high near 77.
Sunday Night
Clear, with a low around 57.
Monday
Sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles WNW Yreka CA
 41.76°N 122.81°W (Elev. 4665 ft)
4:40 pm PDT Aug 17, 2026
7pm PDT Aug 17, 2026-6pm PDT Aug 24, 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