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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Logan-Cache Airport (KLGU)

Lat: 41.78652°NLon: 111.85187°WElev: 4446.0ft.

Clear

78°F

26°C

Humidity 41%
Wind Speed NNE 5 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 28 Aug 11:51 AM MDT
Extended Forecast for

Smithfield UT

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. West southwest wind 3 to 6 mph.

    High: 84 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 9pm. Mostly cloudy, with a low around 55. South wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. High near 75. South wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 51. Southwest wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 51 °F

    Chance
    T-storms then
    Showers

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before noon, then a slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 74. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 78. Chance of precipitation is 20%.

    High: 78 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 50.

    Low: 50 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Tuesday

    Tuesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. West southwest wind 3 to 6 mph.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 9pm. Mostly cloudy, with a low around 55. South wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. High near 75. South wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 51. Southwest wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers likely and possibly a thunderstorm before noon, then a slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 74. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Mostly clear, with a low around 48.
Monday
A slight chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 78. Chance of precipitation is 20%.
Monday Night
A chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 50.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 78.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 50.
Thursday
A slight chance of showers. Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
Smithfield UT
 41.84°N 111.85°W (Elev. 4547 ft)
Last Update:
12:31 am MDT Aug 28, 2026
Forecast Valid:
12pm MDT Aug 28, 2026-6pm MDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

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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