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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Nephi Municipal Airport (KU14)

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

Partly Cloudy

55°F

13°C

Humidity 93%
Wind Speed NNW 5 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 19 Sep 03:35 AM MDT
Extended Forecast for

Nephi UT

  • Overnight

    Overnight: Mostly clear, with a low around 50. Calm wind.

    Low: 50 °F

    Mostly Clear

  • Saturday

    Saturday: Isolated showers and thunderstorms after noon. Sunny, with a high near 71. Calm wind becoming west northwest 5 to 7 mph in the afternoon. Chance of precipitation is 20%.

    High: 71 °F

    Sunny then
    Isolated
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 47. North northwest wind 5 to 8 mph becoming calm after midnight.

    Low: 47 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 73. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 73 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 48. East northeast wind around 6 mph becoming light and variable after midnight.

    Low: 48 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 75.

    High: 75 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 49.

    Low: 49 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 50. Calm wind.
Saturday
Isolated showers and thunderstorms after noon. Sunny, with a high near 71. Calm wind becoming west northwest 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 47. North northwest wind 5 to 8 mph becoming calm after midnight.
Sunday
Sunny, with a high near 73. Calm wind becoming west northwest around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 48. East northeast wind around 6 mph becoming light and variable after midnight.
Monday
Mostly sunny, with a high near 79.
Monday Night
A 20 percent chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 53.
Tuesday
A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 75.
Tuesday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 49.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 51.
Thursday
Sunny, with a high near 81.
Thursday Night
Partly cloudy, with a low around 54.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Nephi UT
 39.72°N 111.82°W (Elev. 5197 ft)
Last Update:
12:36 am MDT Sep 19, 2026
Forecast Valid:
3am MDT Sep 19, 2026-6pm MDT Sep 25, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation