Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

DUCHESNE (KU69)

Lat: 40.1919°NLon: 110.38099°WElev: 5826.0ft.

Clear

75°F

24°C

Humidity 31%
Wind Speed N 0 MPH
Barometer 30.32 in (1026.75 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 27 Aug 09:50 AM MDT
Extended Forecast for

Altonah UT

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 3pm.  Increasing clouds, with a high near 82. Southeast wind 5 to 8 mph becoming northwest in the afternoon.

    High: 82 °F

    Sunny then
    Chance
    T-storms

  • Tonight

    Tonight: Mostly cloudy, with a low around 57. Northwest wind 5 to 8 mph.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly between noon and 3pm.  Mostly sunny, with a high near 81. North wind 5 to 11 mph becoming south in the morning.

    High: 81 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 10 percent chance of showers and thunderstorms before 9pm.  Mostly cloudy, with a low around 56. West southwest wind 5 to 10 mph becoming light and variable  after midnight.

    Low: 56 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers and possibly a thunderstorm after noon.  High near 76. Light and variable wind becoming southwest 10 to 15 mph in the morning.  Chance of precipitation is 80%.

    High: 76 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm.  Low around 50. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F

    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm.  High near 71. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Showers then
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms.  Partly sunny, with a high near 70.

    High: 70 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 82. Southeast wind 5 to 8 mph becoming northwest in the afternoon.
Tonight
Mostly cloudy, with a low around 57. Northwest wind 5 to 8 mph.
Friday
A 30 percent chance of showers and thunderstorms, mainly between noon and 3pm. Mostly sunny, with a high near 81. North wind 5 to 11 mph becoming south in the morning.
Friday Night
A 10 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 56. West southwest wind 5 to 10 mph becoming light and variable after midnight.
Saturday
A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers and possibly a thunderstorm after noon. High near 76. Light and variable wind becoming southwest 10 to 15 mph in the morning. Chance of precipitation is 80%.
Saturday Night
Showers and possibly a thunderstorm. Low around 50. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and possibly a thunderstorm. High near 71. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 47.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 70.
Monday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 47.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 71.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 49.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Altonah UT
 40.41°N 110.3°W (Elev. 6801 ft)
12:31 am MDT Aug 27, 2026
10am MDT Aug 27, 2026-6pm MDT Sep 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database