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 >

Hazardous Weather Conditions

Current conditions at

Rock Springs, Rock Springs-Sweetwater County Airport (KRKS)

Lat: 41.59417°NLon: 109.06528°WElev: 6759.0ft.

Mostly Cloudy

50°F

10°C

Humidity 93%
Wind Speed SE 10 MPH
Barometer 30.23 in (1023.71 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 19 Sep 12:00 AM MDT
Extended Forecast for

4 Miles NNE Reliance WY

  • Overnight

    Overnight: Isolated showers and thunderstorms before 3am.  Patchy fog after 3am.  Otherwise, mostly cloudy, with a low around 47. Northeast wind around 6 mph becoming calm.  Chance of precipitation is 20%.

    Low: 47 °F

    Isolated
    T-storms and
    Patchy Fog

  • Saturday

    Saturday: Scattered showers and thunderstorms, mainly between 2pm and 5pm.  Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 64. Light and variable wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 23 mph.  Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 64 °F

    Patchy Fog
    then
    Scattered
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms between 8pm and 9pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 38. West wind 5 to 9 mph becoming calm  after midnight.  Chance of precipitation is 10%.

    Low: 38 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 63. Calm wind becoming west 5 to 8 mph in the morning. Winds could gust as high as 20 mph.

    High: 63 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. West northwest wind around 6 mph becoming calm  in the evening.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 69. Light and variable wind.

    High: 69 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43. Light and variable wind.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 43.

    Low: 43 °F

    Slight Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Overnight
Isolated showers and thunderstorms before 3am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 47. Northeast wind around 6 mph becoming calm. Chance of precipitation is 20%.
Saturday
Scattered showers and thunderstorms, mainly between 2pm and 5pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 64. Light and variable wind becoming west 6 to 11 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A slight chance of showers and thunderstorms between 8pm and 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 38. West wind 5 to 9 mph becoming calm after midnight. Chance of precipitation is 10%.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 63. Calm wind becoming west 5 to 8 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
Mostly clear, with a low around 39. West northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 69. Light and variable wind.
Monday Night
Partly cloudy, with a low around 43. Light and variable wind.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 43.
Wednesday
Mostly sunny, with a high near 70.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Mostly sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Reliance WY
 41.74°N 109.18°W (Elev. 6818 ft)
11:47 pm MDT Sep 18, 2026
12am 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