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

Tracking Atmospheric River for the West Coast; Space Weather Storming Continues

An atmospheric river will bring threats of gusty to high winds and heavy rainfall to California mainly Thursday into Saturday which may bring areas of flooding and wind damage. Heavy snow will be possible over the Sierra Nevada mountains Thursday into Friday associated with the atmospheric river. Minor to severe geomagnetic storming (space weather) is expected to continue into early Thursday. Read More >

Current conditions at

Riverton Regional Airport (KRIW)

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

Clear

59°F

15°C

Humidity 28%
Wind Speed S 5 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 12 Nov 01:53 PM MST
Extended Forecast for

Arapahoe WY

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 60. South southeast wind around 6 mph becoming east northeast.

    High: 60 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 35. Light and variable wind becoming west around 6 mph in the evening.

    Low: 35 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 65. Light and variable wind becoming southwest 5 to 7 mph in the afternoon.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 36. South southwest wind 9 to 13 mph, with gusts as high as 20 mph.

    Low: 36 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 65. Breezy, with a southwest wind 10 to 17 mph, with gusts as high as 28 mph.

    High: 65 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 35. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.

    Low: 35 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 61. West wind around 7 mph.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 60. South southeast wind around 6 mph becoming east northeast.
Tonight
Mostly cloudy, with a low around 35. Light and variable wind becoming west around 6 mph in the evening.
Thursday
Sunny, with a high near 65. Light and variable wind becoming southwest 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 36. South southwest wind 9 to 13 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 65. Breezy, with a southwest wind 10 to 17 mph, with gusts as high as 28 mph.
Friday Night
Partly cloudy, with a low around 35. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 61. West wind around 7 mph.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
Mostly sunny, with a high near 57.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 32.
Monday
A slight chance of showers. Partly sunny, with a high near 52.
Monday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 28.
Tuesday
A slight chance of rain and snow showers. Partly sunny, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Arapahoe WY
 42.97°N 108.46°W (Elev. 4993 ft)
Last Update:
1:32 pm MST Nov 12, 2025
Forecast Valid:
2pm MST Nov 12, 2025-6pm MST Nov 18, 2025
 
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