Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

Hazardous Weather Conditions

Current conditions at

St George Regional Airport (KSGU)

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

Clear

79°F

26°C

Humidity 31%
Wind Speed ESE 6 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 31 Aug 01:56 AM MDT
Extended Forecast for

6 Miles WNW Zion NP and Zion Canyon UT

Flood Watch August 31, 02:14am until August 31, 09:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch August 31, 02:14am until August 31, 09:00pm

    NOW until 9:00pm Mon

    Flood Watch

  • Overnight

    Low: 66 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after noon.  High near 82. East northeast wind 6 to 13 mph.  Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 82 °F

    Chance
    T-storms then
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before midnight, then a chance of showers between midnight and 3am.  Partly cloudy, with a low around 64. East northeast wind 6 to 15 mph.  Chance of precipitation is 40%.

    Low: 64 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 85. East wind 11 to 14 mph becoming south southwest in the afternoon.  Chance of precipitation is 30%.

    High: 85 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63. Southwest wind around 11 mph becoming southeast after midnight.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 63.

    Low: 63 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 66. East wind 11 to 13 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after noon. High near 82. East northeast wind 6 to 13 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
A chance of showers and thunderstorms before midnight, then a chance of showers between midnight and 3am. Partly cloudy, with a low around 64. East northeast wind 6 to 15 mph. Chance of precipitation is 40%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 85. East wind 11 to 14 mph becoming south southwest in the afternoon. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 63. Southwest wind around 11 mph becoming southeast after midnight.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Clear, with a low around 63.
Thursday
Sunny, with a high near 87.
Thursday Night
Mostly clear, with a low around 65.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 87.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles WNW Zion NP and Zion Canyon UT
 37.24°N 113.09°W (Elev. 5010 ft)
12:31 am MDT Aug 31, 2026
2am MDT Aug 31, 2026-6pm MDT Sep 6, 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