Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

70°F

21°C

Humidity 30%
Wind Speed N 3 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 21 Aug 08:35 AM PDT
Extended Forecast for

9 Miles WNW Yreka CA

Red Flag Warning August 21, 02:00pm until August 21, 09:00pm
Click here for hazard details and duration
Red Flag Warning
  • Today

    Today: Mostly sunny through mid morning, then becoming cloudy, with a high near 80. Light southeast wind becoming south 8 to 13 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 80 °F

    Becoming
    Cloudy

  • Tonight

    Tonight: A 20 percent chance of showers before 11pm.  Mostly clear, with a low around 57. South wind 5 to 10 mph becoming light and variable  after midnight.

    Low: 57 °F

    Slight Chance
    Showers then
    Clear

  • Saturday

    Saturday: Sunny, with a high near 75. Light west wind becoming west northwest 6 to 11 mph in the afternoon.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 55. West northwest wind 8 to 13 mph becoming light north northwest  after midnight. Winds could gust as high as 20 mph.

    Low: 55 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 79. Light north northwest wind.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

Today
Mostly sunny through mid morning, then becoming cloudy, with a high near 80. Light southeast wind becoming south 8 to 13 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
A 20 percent chance of showers before 11pm. Mostly clear, with a low around 57. South wind 5 to 10 mph becoming light and variable after midnight.
Saturday
Sunny, with a high near 75. Light west wind becoming west northwest 6 to 11 mph in the afternoon.
Saturday Night
Clear, with a low around 55. West northwest wind 8 to 13 mph becoming light north northwest after midnight. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 79. Light north northwest wind.
Sunday Night
Mostly clear, with a low around 59.
Monday
Sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles WNW Yreka CA
 41.79°N 122.79°W (Elev. 4354 ft)
4:40 am PDT Aug 21, 2026
8am PDT Aug 21, 2026-6pm PDT Aug 27, 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