Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Current conditions at

Montague Siskiyou County Airport (KSIY)

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

Clear

81°F

27°C

Humidity 17%
Wind Speed N 0 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 04 Aug 10:35 AM PDT
Extended Forecast for

17 Miles NNE Weed CA

Heat Advisory August 5, 11:00am until August 6, 11:00pm
Click here for hazard details and duration
Heat Advisory
  • Today

    Today: Patchy smoke before noon. Sunny, with a high near 91. Light and variable wind becoming west 5 to 9 mph in the afternoon.

    High: 91 °F

    Patchy Smoke
    then Sunny

  • Tonight

    Tonight: Patchy smoke after 11pm. Clear, with a low around 56. West wind around 6 mph becoming light and variable.

    Low: 56 °F

    Patchy Smoke

  • Wednesday

    Wednesday: Sunny, with a high near 92. Light and variable wind becoming west southwest 5 to 9 mph in the morning.

    High: 92 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 57. West southwest wind 5 to 9 mph becoming southeast after midnight.

    Low: 57 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 92. Light and variable wind becoming west southwest 5 to 9 mph in the afternoon.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 57.

    Low: 57 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 55.

    Low: 55 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

Today
Patchy smoke before noon. Sunny, with a high near 91. Light and variable wind becoming west 5 to 9 mph in the afternoon.
Tonight
Patchy smoke after 11pm. Clear, with a low around 56. West wind around 6 mph becoming light and variable.
Wednesday
Sunny, with a high near 92. Light and variable wind becoming west southwest 5 to 9 mph in the morning.
Wednesday Night
Clear, with a low around 57. West southwest wind 5 to 9 mph becoming southeast after midnight.
Thursday
Sunny, with a high near 92. Light and variable wind becoming west southwest 5 to 9 mph in the afternoon.
Thursday Night
Clear, with a low around 57.
Friday
Sunny, with a high near 91.
Friday Night
Clear, with a low around 55.
Saturday
Sunny, with a high near 88.
Saturday Night
Clear, with a low around 52.
Sunday
Sunny, with a high near 85.
Sunday Night
Clear, with a low around 48.
Monday
Sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles NNE Weed CA
 41.61°N 122.2°W (Elev. 4941 ft)
10:40 am PDT Aug 4, 2026
10am PDT Aug 4, 2026-6pm PDT Aug 10, 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