Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

I80/US30 - Peru Hill (KCMS)

Lat: 41.54958° N Lon: 109.60197° W Elev: 6407.0 ft.

NA

57°F

14°C

Humidity 40%
Wind Speed E 3 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility 1.24 mi
Last update 04 Sep 08:12 AM MDT
Detailed forecast for

Rock Springs and Green River

Today
Sunny, breezy with highs around 80. South winds 15 to 20 mph with gusts up to 30 mph.
Tonight
Mostly clear and breezy. Lows around 50. South winds 15 to 20 mph, diminishing to around 10 mph after midnight.
Saturday
Mostly sunny. Highs around 80. Southwest winds around 10 mph with gusts up to 25 mph in the afternoon.
Saturday Night
Partly cloudy in the evening, then clearing. Lows around 50. Southwest winds around 10 mph with gusts up to 20 mph in the evening.
Sunday
Partly cloudy in the morning, then mostly cloudy with a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 70s. South winds 10 to 15 mph with gusts up to 30 mph in the afternoon. Chance of rain 30 percent.
Sunday Night
Mostly cloudy with a slight chance of thunderstorms. Showers likely, mainly in the evening. Lows around 50. Chance of rain 60 percent.
Labor Day
Partly cloudy in the morning, then clearing. Breezy with highs in the lower 70s.
Monday Night
Mostly clear and breezy. Lows in the lower 40s.
Tuesday
Mostly sunny. Highs in the lower 70s.
Tuesday Night
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s.
Wednesday
Partly cloudy. A slight chance of. Highs in the upper 70s.
Wednesday Night
Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows around 50. Chance of rain 20 percent.
Thursday
Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 30 percent.



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617 AM MDT Fri Sep 4 2026
 
 

Additional Resources

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Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database