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

Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Current conditions at

Riverton Regional Airport (KRIW)

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

Clear

57°F

14°C

Humidity 41%
Wind Speed SW 11 MPH
Barometer 29.74 in (1007.11 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 10 Oct 05:15 AM MDT
Extended Forecast for

Riverton WY

  • Today

    Today: Mostly sunny, with a high near 78. Breezy, with a south southwest wind 17 to 23 mph, with gusts as high as 34 mph.

    High: 78 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 1am. Increasing clouds, with a low around 46. Breezy, with a south southwest wind 10 to 16 mph becoming north after midnight. Winds could gust as high as 28 mph.

    Low: 46 °F

    Chance
    Showers and
    Breezy

  • Sunday

    Sunday: A chance of showers before 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 60. North wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    High: 60 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before midnight, then showers likely. Low around 38. North wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 38 °F

    Showers

  • Columbus Day

    Columbus Day: A 20 percent chance of showers before noon. Mostly sunny, with a high near 59. North northwest wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 59 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Monday Night

    Monday Night: A 50 percent chance of showers. Partly cloudy, with a low around 36. North wind 5 to 10 mph becoming light and variable after midnight.

    Low: 36 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of showers. Mostly sunny, with a high near 59. Light and variable wind becoming north 5 to 7 mph in the afternoon.

    High: 59 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely. Mostly cloudy, with a low around 37. Chance of precipitation is 70%.

    Low: 37 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before noon, then a chance of showers. Mostly cloudy, with a high near 56. Chance of precipitation is 60%.

    High: 56 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 78. Breezy, with a south southwest wind 17 to 23 mph, with gusts as high as 34 mph.
Tonight
A 30 percent chance of showers, mainly after 1am. Increasing clouds, with a low around 46. Breezy, with a south southwest wind 10 to 16 mph becoming north after midnight. Winds could gust as high as 28 mph.
Sunday
A chance of showers before 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 60. North wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Sunday Night
Showers and possibly a thunderstorm before midnight, then showers likely. Low around 38. North wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Columbus Day
A 20 percent chance of showers before noon. Mostly sunny, with a high near 59. North northwest wind 10 to 13 mph, with gusts as high as 20 mph.
Monday Night
A 50 percent chance of showers. Partly cloudy, with a low around 36. North wind 5 to 10 mph becoming light and variable after midnight.
Tuesday
A 40 percent chance of showers. Mostly sunny, with a high near 59. Light and variable wind becoming north 5 to 7 mph in the afternoon.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 37. Chance of precipitation is 70%.
Wednesday
Showers likely and possibly a thunderstorm before noon, then a chance of showers. Mostly cloudy, with a high near 56. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers. Partly cloudy, with a low around 34.
Thursday
A chance of showers. Sunny, with a high near 57.
Thursday Night
Partly cloudy, with a low around 31.
Friday
Sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
Riverton WY
 43.02°N 108.38°W (Elev. 4931 ft)
Last Update:
2:47 am MDT Oct 10, 2026
Forecast Valid:
5am MDT Oct 10, 2026-6pm MDT Oct 16, 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