Hazardous Coastal Conditions for the Mid-Atlantic; Storm System Approaching Southern Alaska

A Nor'easter will create hazardous marine and coastal conditions along the Mid-Atlantic coast through mid-week, with significant coastal flooding and beach erosion possible. Meanwhile, another strong storm system is forecast to bring high winds and heavy precipitation to portions of southern Alaska. Elsewhere, relatively benign weather is expected through the first half of the work week. Read More >

Current conditions at

Riverton Regional Airport (KRIW)

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

Clear

39°F

4°C

Humidity 69%
Wind Speed SE 4 MPH
Barometer 30.16 in (1021.34 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 19 Oct 02:35 AM MDT
Extended Forecast for

3 Miles ENE Arapahoe WY

  • Overnight

    Overnight: Widespread frost after 5am.  Otherwise, clear, with a steady temperature around 40. Southwest wind around 6 mph.

    Low: 40 °F

    Frost

  • Monday

    Monday: Widespread frost, mainly before 9am.  Otherwise, sunny, with a high near 65. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 65 °F

    Frost then
    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 37. Light and variable wind becoming southwest around 6 mph.

    Low: 37 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 66. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 66 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 39. Light and variable wind.

    Low: 39 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 66. Calm wind becoming east around 5 mph.

    High: 66 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44. South southwest wind 3 to 7 mph.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 71. Breezy.

    High: 71 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 47. Breezy.

    Low: 47 °F

    Mostly Cloudy
    and Breezy

Detailed Forecast

Overnight
Widespread frost after 5am. Otherwise, clear, with a steady temperature around 40. Southwest wind around 6 mph.
Monday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 65. Calm wind becoming east southeast around 6 mph in the afternoon.
Monday Night
Clear, with a low around 37. Light and variable wind becoming southwest around 6 mph.
Tuesday
Sunny, with a high near 66. Calm wind becoming northeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 39. Light and variable wind.
Wednesday
Sunny, with a high near 66. Calm wind becoming east around 5 mph.
Wednesday Night
Partly cloudy, with a low around 44. South southwest wind 3 to 7 mph.
Thursday
Mostly sunny, with a high near 71. Breezy.
Thursday Night
Mostly cloudy, with a low around 47. Breezy.
Friday
A 30 percent chance of showers after noon. Mostly sunny, with a high near 63. Breezy.
Friday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 37. Breezy.
Saturday
Mostly sunny, with a high near 54.
Saturday Night
Mostly clear, with a low around 34.
Sunday
Sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Arapahoe WY
 43°N 108.41°W (Elev. 4957 ft)
1:31 am MDT Oct 19, 2026
2am MDT Oct 19, 2026-6pm MDT Oct 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