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

Areas of Dangerous Heat and Severe Thunderstorms

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 before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Current conditions at

Nephi Municipal Airport (KU14)

Lat: 39.7386°NLon: 111.8722°WElev: 5022.0ft.

Clear

79°F

26°C

Humidity 27%
Wind Speed SSE 10 MPH
Barometer 30.2 in (1022.69 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 26 Aug 10:35 PM MDT
Extended Forecast for

Nephi UT

  • Tonight

    Tonight: Partly cloudy, with a low around 61. East wind 3 to 5 mph.

    Low: 61 °F

    Partly Cloudy

  • Thursday

    Thursday: Isolated showers and thunderstorms after noon. Sunny, with a high near 94. Light and variable wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 20%.

    High: 94 °F

    Sunny then
    Isolated
    T-storms

  • Thursday Night

    Thursday Night: Isolated showers and thunderstorms before 9pm. Mostly cloudy, with a low around 64. South southwest wind 7 to 9 mph becoming east southeast after midnight. Chance of precipitation is 10%.

    Low: 64 °F

    Isolated
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Isolated showers and thunderstorms after noon. Partly sunny, with a high near 91. East southeast wind 5 to 14 mph becoming southwest in the afternoon. Chance of precipitation is 20%.

    High: 91 °F

    Partly Sunny
    then Isolated
    T-storms

  • Friday Night

    Friday Night: Isolated showers and thunderstorms, then scattered showers after 9pm. Mostly cloudy, with a low around 61. Southwest wind 7 to 13 mph becoming east southeast after midnight. Chance of precipitation is 30%.

    Low: 61 °F

    Isolated
    T-storms then
    Scattered
    Showers

  • Saturday

    Saturday: Scattered showers before 9am, then scattered showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 85. Chance of precipitation is 70%.

    High: 85 °F

    Scattered
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 55. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Showers

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 82.

    High: 82 °F

    Showers
    Likely then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 54.

    Low: 54 °F

    Slight Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 61. East wind 3 to 5 mph.
Thursday
Isolated showers and thunderstorms after noon. Sunny, with a high near 94. Light and variable wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 20%.
Thursday Night
Isolated showers and thunderstorms before 9pm. Mostly cloudy, with a low around 64. South southwest wind 7 to 9 mph becoming east southeast after midnight. Chance of precipitation is 10%.
Friday
Isolated showers and thunderstorms after noon. Partly sunny, with a high near 91. East southeast wind 5 to 14 mph becoming southwest in the afternoon. Chance of precipitation is 20%.
Friday Night
Isolated showers and thunderstorms, then scattered showers after 9pm. Mostly cloudy, with a low around 61. Southwest wind 7 to 13 mph becoming east southeast after midnight. Chance of precipitation is 30%.
Saturday
Scattered showers before 9am, then scattered showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 85. Chance of precipitation is 70%.
Saturday Night
Showers and possibly a thunderstorm. Low around 55. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 82.
Sunday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 54.
Monday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 55.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 55.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
Nephi UT
 39.71°N 111.85°W (Elev. 5092 ft)
Last Update:
12:31 pm MDT Aug 26, 2026
Forecast Valid:
10pm MDT Aug 26, 2026-6pm MDT Sep 2, 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