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

Mount Shasta (KMHS)

Lat: 41.31494°NLon: 122.31702°WElev: 3540.0ft.

Clear

91°F

33°C

Humidity 20%
Wind Speed NA 3 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 04 Aug 12:56 PM PDT
Extended Forecast for

Mount Shasta CA

Red Flag Warning August 5, 02:00pm until August 5, 09:00pm
Click here for hazard details and duration
Red Flag Warning
  • This Afternoon

    This Afternoon: Sunny and hot, with a high near 96. South wind 3 to 6 mph.

    High: 96 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 61. Light and variable wind.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93. Calm wind becoming south 5 to 8 mph in the morning.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 60. South wind 5 to 7 mph becoming calm  in the evening.

    Low: 60 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 93. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 60.

    Low: 60 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 96. South wind 3 to 6 mph.
Tonight
Mostly clear, with a low around 61. Light and variable wind.
Wednesday
Sunny, with a high near 93. Calm wind becoming south 5 to 8 mph in the morning.
Wednesday Night
Clear, with a low around 60. South wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 93. Calm wind becoming south 5 to 8 mph in the afternoon.
Thursday Night
Clear, with a low around 60.
Friday
Sunny, with a high near 94.
Friday Night
Clear, with a low around 61.
Saturday
Sunny, with a high near 94.
Saturday Night
Clear, with a low around 59.
Sunday
Sunny, with a high near 92.
Sunday Night
Clear, with a low around 58.
Monday
Sunny, with a high near 90.
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Shasta CA
 41.31°N 122.29°W (Elev. 3816 ft)
1:01 pm PDT Aug 4, 2026
1pm PDT Aug 4, 2026-6pm PDT Aug 10, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database