Flooding Risks from Tropical Moisture Across the Intermountain West and East Coast

Tropical moisture from Isaias and Rachel will impact portions of the Intermountain West and East Coast states. Flooding, gusty winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, record warmth will spread northward across the Mississippi Valley the next few days. Looking for snow, the first winter storm of the season is underway across the northern Rockies. Read More >

Current conditions at

Riverton Regional Airport (KRIW)

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

Overcast

48°F

9°C

Humidity 87%
Wind Speed NNE 6 MPH
Barometer 29.78 in (1008.47 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 11 Oct 07:00 AM MDT
Extended Forecast for

2 Miles NE Arapahoe WY

  • Today

    Today: A chance of showers, with thunderstorms also possible after noon.  Cloudy, with a high near 63. Breezy, with a west southwest wind 8 to 15 mph becoming south in the afternoon. Winds could gust as high as 21 mph.  Chance of precipitation is 50%.

    High: 63 °F

    Chance
    Showers and
    Breezy

  • Tonight

    Tonight: Showers and thunderstorms likely before 9pm, then a chance of showers.  Cloudy during the early evening, then becoming partly cloudy, with a low around 39. Breezy, with a southeast wind 14 to 21 mph, with gusts as high as 31 mph.  Chance of precipitation is 60%.

    Low: 39 °F

    Showers
    Likely then
    Chance
    Showers and
    Breezy

  • Columbus Day

    Columbus Day: A 20 percent chance of showers after 5pm.  Mostly sunny, with a high near 59. Breezy, with a south southwest wind 9 to 16 mph becoming north northeast in the morning. Winds could gust as high as 24 mph.

    High: 59 °F

    Mostly Sunny
    and Breezy
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Showers.  Low around 37. North northeast wind 5 to 10 mph becoming west after midnight.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 37 °F

    Showers

  • Tuesday

    Tuesday: Showers likely, mainly after noon.  Partly sunny, with a high near 57. West wind 5 to 10 mph becoming north in the morning.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 57 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm.  Low around 36. North wind 8 to 11 mph.  Chance of precipitation is 80%.

    Low: 36 °F

    Showers

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after noon.  Mostly cloudy, with a high near 54. North wind 5 to 10 mph becoming light and variable.  Chance of precipitation is 60%.

    High: 54 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers.  Mostly cloudy, with a low around 34.

    Low: 34 °F

    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers before noon.  Mostly sunny, with a high near 56.

    High: 56 °F

    Slight Chance
    Showers then
    Sunny

Detailed Forecast

Today
A chance of showers, with thunderstorms also possible after noon. Cloudy, with a high near 63. Breezy, with a west southwest wind 8 to 15 mph becoming south in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 50%.
Tonight
Showers and thunderstorms likely before 9pm, then a chance of showers. Cloudy during the early evening, then becoming partly cloudy, with a low around 39. Breezy, with a southeast wind 14 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 60%.
Columbus Day
A 20 percent chance of showers after 5pm. Mostly sunny, with a high near 59. Breezy, with a south southwest wind 9 to 16 mph becoming north northeast in the morning. Winds could gust as high as 24 mph.
Monday Night
Showers. Low around 37. North northeast wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Showers likely, mainly after noon. Partly sunny, with a high near 57. West wind 5 to 10 mph becoming north in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Showers and possibly a thunderstorm. Low around 36. North wind 8 to 11 mph. Chance of precipitation is 80%.
Wednesday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 54. North wind 5 to 10 mph becoming light and variable. Chance of precipitation is 60%.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 34.
Thursday
A 20 percent chance of showers before noon. Mostly sunny, with a high near 56.
Thursday Night
Mostly clear, with a low around 30.
Friday
Sunny, with a high near 56.
Friday Night
Mostly clear, with a low around 30.
Saturday
Sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NE Arapahoe WY
 42.99°N 108.44°W (Elev. 4987 ft)
6:32 am MDT Oct 11, 2026
7am MDT Oct 11, 2026-6pm MDT Oct 17, 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