Thunderstorms and Heavy Rainfall in the Southeast, Montana, and Iowa; Lowell Begins to Impact Hawaii

Strong thunderstorms with damaging winds and heavy rain are expected across portions of the Southeast. Thunderstorms may produce large hail across portions of Montana. Heavy rainfall could produce flash flooding across Iowa and vulnerable areas in Utah. Lowell will bring heavy rain, dangerous swells and rip currents to portions of Hawaii. Sweltering heat persists across the South-Central US. Read More >

Current conditions at

St George Regional Airport (KSGU)

Lat: 37.0451°NLon: 113.50561°WElev: 2872.0ft.

Rain

73°F

23°C

Humidity 73%
Wind Speed SE 18 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 06 Sep 03:35 PM MDT
Extended Forecast for

5 Miles WSW Springdale UT

Flood Watch September 6, 03:58pm until September 7, 12:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch September 6, 03:58pm until September 7, 12:00am

    NOW until 12:00am Mon

    Flood Watch

  • This Afternoon

    High: 77 °F

    Showers
    Likely

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms before 9pm.  Cloudy, then gradually becoming partly cloudy, with a low around 66. East wind 3 to 7 mph.

    Low: 66 °F

    Chance
    Showers then
    Mostly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 89. East wind 5 to 8 mph becoming west in the afternoon.

    High: 89 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 66. West wind 5 to 9 mph becoming east northeast after midnight.

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94. East northeast wind 5 to 9 mph becoming calm.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 99.

    High: 99 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm. Mostly cloudy, with a steady temperature around 77. South southeast wind around 5 mph. Chance of precipitation is 60%.
Tonight
A 50 percent chance of showers and thunderstorms before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 66. East wind 3 to 7 mph.
Labor Day
Mostly sunny, with a high near 89. East wind 5 to 8 mph becoming west in the afternoon.
Monday Night
Mostly clear, with a low around 66. West wind 5 to 9 mph becoming east northeast after midnight.
Tuesday
Sunny, with a high near 94. East northeast wind 5 to 9 mph becoming calm.
Tuesday Night
Mostly clear, with a low around 70.
Wednesday
Sunny, with a high near 99.
Wednesday Night
Mostly clear, with a low around 72.
Thursday
Sunny and hot, with a high near 100.
Thursday Night
Mostly clear, with a low around 73.
Friday
Sunny, with a high near 99.
Friday Night
Mostly clear, with a low around 73.
Saturday
Sunny, with a high near 95.
Saturday Night
Mostly clear, with a low around 69.
Sunday
Sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Springdale UT
 37.17°N 113.08°W (Elev. 3757 ft)
12:41 pm MDT Sep 6, 2026
3pm MDT Sep 6, 2026-6pm MDT Sep 13, 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