National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St George Regional Airport (KSGU)

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

Clear

82°F

28°C

Humidity 36%
Wind Speed N 0 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 18 Aug 08:56 AM MDT
Extended Forecast for

Washington UT

  • Today

    Today: Mostly sunny and hot, with a high near 103. Light and variable wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 103 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 77. West southwest wind 5 to 8 mph becoming light and variable after midnight.

    Low: 77 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 104. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 104 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 78. West southwest wind 5 to 8 mph becoming calm after midnight.

    Low: 78 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny and hot, with a high near 104. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 104 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 79.

    Low: 79 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny and hot, with a high near 100.

    High: 100 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 76.

    Low: 76 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 99.

    High: 99 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny and hot, with a high near 103. Light and variable wind becoming west southwest 5 to 7 mph in the afternoon.
Tonight
Partly cloudy, with a low around 77. West southwest wind 5 to 8 mph becoming light and variable after midnight.
Wednesday
Sunny and hot, with a high near 104. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 78. West southwest wind 5 to 8 mph becoming calm after midnight.
Thursday
Sunny and hot, with a high near 104. Calm wind becoming west southwest around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 79.
Friday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny and hot, with a high near 100.
Friday Night
A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 76.
Saturday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 99.
Saturday Night
Partly cloudy, with a low around 76.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 98.
Sunday Night
Partly cloudy, with a low around 75.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 96.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Washington UT
 37.13°N 113.5°W (Elev. 2799 ft)
Last Update:
12:31 am MDT Aug 18, 2026
Forecast Valid:
9am MDT Aug 18, 2026-6pm MDT Aug 24, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation