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

Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Salt Lake City, Salt Lake City International Airport (KSLC)

Lat: 40.77069°NLon: 111.96503°WElev: 4226.0ft.

Partly Cloudy

88°F

31°C

Humidity 20%
Wind Speed S 19 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 17 Aug 12:35 PM MDT
Extended Forecast for

Magna UT

  • This Afternoon

    This Afternoon: A 10 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. South wind 8 to 10 mph becoming west southwest.

    High: 92 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 69. South wind 6 to 10 mph.

    Low: 69 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 95. South wind around 10 mph becoming west southwest in the afternoon.

    High: 95 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 68. North wind around 7 mph becoming southeast after midnight.

    Low: 68 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 97. Southeast wind around 7 mph becoming northwest in the afternoon.

    High: 97 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 98.

    High: 98 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 71.

    Low: 71 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 95.

    High: 95 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
A 10 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. South wind 8 to 10 mph becoming west southwest.
Tonight
Mostly clear, with a low around 69. South wind 6 to 10 mph.
Monday
Sunny, with a high near 95. South wind around 10 mph becoming west southwest in the afternoon.
Monday Night
Clear, with a low around 68. North wind around 7 mph becoming southeast after midnight.
Tuesday
Sunny, with a high near 97. Southeast wind around 7 mph becoming northwest in the afternoon.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
Sunny, with a high near 98.
Wednesday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 71.
Thursday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 95.
Thursday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 71.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 96.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 95.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Magna UT
 40.71°N 112.1°W (Elev. 4236 ft)
Last Update:
3:05 am MDT Aug 17, 2025
Forecast Valid:
12pm MDT Aug 17, 2025-6pm MDT Aug 23, 2025
 
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