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

Heavy Rainfall Threat Continues in the Southwest on Monday; Record Warmth in the Plains and Midwest

Remnant moisture from Tropical Storm Rachel will persist over portions of the Great Basin and Southwest on Monday, bringing a potential heavy to excessive rainfall risk. Well above average and potentially record breaking temperatures will develop across the Plains and Midwest early this week, spreading into the Lower Mississippi Valley and Southeast midweek. Read More >

Current conditions at

Riverton Regional Airport (KRIW)

Lat: 43.06219°NLon: 108.44701°WElev: 5443.0ft.

Overcast

40°F

4°C

Humidity 85%
Wind Speed N 0 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 12 Oct 10:53 AM MDT
Extended Forecast for

Riverton WY

  • Columbus Day

    Columbus Day: A chance of showers before 3pm, then a chance of showers after 4pm. Patchy fog. Otherwise, partly sunny, with a high near 49. North northeast wind around 6 mph. Chance of precipitation is 40%.

    High: 49 °F

    Chance
    Showers and
    Patchy Fog

  • Tonight

    Tonight: Showers, mainly before midnight. Patchy fog before 10pm. Low around 42. North wind 6 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 42 °F

    Showers and
    Patchy Fog
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers before 8am, then a chance of showers after 2pm. Mostly cloudy, with a high near 54. North wind 5 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers. Low around 37. North wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Showers

  • Wednesday

    Wednesday: Showers likely, mainly before noon. Mostly cloudy, with a high near 52. North northwest wind 3 to 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 37. Light and variable wind becoming north northwest 5 to 9 mph in the evening.

    Low: 37 °F

    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers before noon. Sunny, with a high near 55. Breezy, with a north northeast wind 7 to 15 mph, with gusts as high as 23 mph.

    High: 55 °F

    Slight Chance
    Showers then
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

Detailed Forecast

Columbus Day
A chance of showers before 3pm, then a chance of showers after 4pm. Patchy fog. Otherwise, partly sunny, with a high near 49. North northeast wind around 6 mph. Chance of precipitation is 40%.
Tonight
Showers, mainly before midnight. Patchy fog before 10pm. Low around 42. North wind 6 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
A chance of showers before 8am, then a chance of showers after 2pm. Mostly cloudy, with a high near 54. North wind 5 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Showers. Low around 37. North wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers likely, mainly before noon. Mostly cloudy, with a high near 52. North northwest wind 3 to 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 37. Light and variable wind becoming north northwest 5 to 9 mph in the evening.
Thursday
A 20 percent chance of showers before noon. Sunny, with a high near 55. Breezy, with a north northeast wind 7 to 15 mph, with gusts as high as 23 mph.
Thursday Night
Mostly clear, with a low around 29.
Friday
Sunny, with a high near 59.
Friday Night
Mostly clear, with a low around 31.
Saturday
Sunny, with a high near 68.
Saturday Night
Mostly clear, with a low around 35.
Sunday
Sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Riverton WY
 43.04°N 108.41°W (Elev. 5046 ft)
Last Update:
10:31 am MDT Oct 12, 2026
Forecast Valid:
11am MDT Oct 12, 2026-6pm MDT Oct 18, 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