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

Arrow Creek Hill I-90 MP 468.6 (MTARC)

Lat: 45.78°NLon: 108.16341°WElev: 3924.0ft.

unknown precip

29°F

-2°C

Humidity 82%
Wind Speed SE 11 MPH
Barometer NA
Dewpoint 24°F (-4°C)
Visibility NA
Wind Chill19°F (-7°C)
Last update 09 Mar 08:00 PM MDT
Extended Forecast for

3 Miles WSW Pompeys Pillar MT

  • Tonight

    Tonight: A 30 percent chance of snow, mainly after 2am. Cloudy, with a low around 28. West northwest wind around 6 mph becoming calm after midnight. Total nighttime snow accumulation of less than a half inch possible.

    Low: 28 °F

    Chance Snow

  • Tuesday

    Tuesday: A 40 percent chance of snow. Partly sunny, with a high near 44. Calm wind becoming northwest 5 to 7 mph in the afternoon. Little or no snow accumulation expected.

    High: 44 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow before midnight. Partly cloudy, with a low around 23. West northwest wind 5 to 7 mph becoming calm. Little or no snow accumulation expected.

    Low: 23 °F

    Chance Snow
    then Partly
    Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 51. West southwest wind 5 to 15 mph.

    High: 51 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain before 9pm, then a chance of rain and snow between 9pm and 3am, then a chance of rain after 3am. Cloudy, with a low around 36. West southwest wind 6 to 10 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 36 °F

    Chance
    Rain/Snow

  • Thursday

    Thursday: A 40 percent chance of rain, mainly after noon. Mostly cloudy, with a high near 62. West southwest wind 8 to 13 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 46 mph.

    High: 62 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain showers before 9pm, then rain and snow showers. Low around 33. Northwest wind 19 to 24 mph becoming east 6 to 11 mph after midnight. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Rain/Snow

  • Friday

    Friday: Rain and snow showers likely, becoming all rain after noon. Cloudy, with a high near 54. East wind 6 to 15 mph becoming west northwest in the afternoon. Chance of precipitation is 60%.

    High: 54 °F

    Rain/Snow
    Likely then
    Showers
    Likely

  • Friday Night

    Friday Night: Rain showers likely before 9pm, then rain and snow showers likely. Cloudy, with a low around 28. Northwest wind 8 to 13 mph becoming north northeast after midnight. Chance of precipitation is 70%.

    Low: 28 °F

    Rain/Snow
    Likely

Detailed Forecast

Tonight
A 30 percent chance of snow, mainly after 2am. Cloudy, with a low around 28. West northwest wind around 6 mph becoming calm after midnight. Total nighttime snow accumulation of less than a half inch possible.
Tuesday
A 40 percent chance of snow. Partly sunny, with a high near 44. Calm wind becoming northwest 5 to 7 mph in the afternoon. Little or no snow accumulation expected.
Tuesday Night
A 30 percent chance of snow before midnight. Partly cloudy, with a low around 23. West northwest wind 5 to 7 mph becoming calm. Little or no snow accumulation expected.
Wednesday
Mostly sunny, with a high near 51. West southwest wind 5 to 15 mph.
Wednesday Night
A chance of rain before 9pm, then a chance of rain and snow between 9pm and 3am, then a chance of rain after 3am. Cloudy, with a low around 36. West southwest wind 6 to 10 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Thursday
A 40 percent chance of rain, mainly after noon. Mostly cloudy, with a high near 62. West southwest wind 8 to 13 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 46 mph.
Thursday Night
Rain showers before 9pm, then rain and snow showers. Low around 33. Northwest wind 19 to 24 mph becoming east 6 to 11 mph after midnight. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday
Rain and snow showers likely, becoming all rain after noon. Cloudy, with a high near 54. East wind 6 to 15 mph becoming west northwest in the afternoon. Chance of precipitation is 60%.
Friday Night
Rain showers likely before 9pm, then rain and snow showers likely. Cloudy, with a low around 28. Northwest wind 8 to 13 mph becoming north northeast after midnight. Chance of precipitation is 70%.
Saturday
Rain and snow showers. High near 45. North northeast wind 7 to 15 mph. Chance of precipitation is 80%.
Saturday Night
Snow showers likely. Mostly cloudy, with a low around 17. North wind 7 to 15 mph. Chance of precipitation is 70%.
Sunday
A 30 percent chance of snow showers. Mostly cloudy, with a high near 36. North northeast wind around 5 mph becoming light and variable.
Sunday Night
A 40 percent chance of snow showers. Cloudy, with a low around 24. East wind 3 to 6 mph.
Monday
A chance of rain and snow showers. Cloudy, with a high near 49. Light and variable wind becoming west 5 to 9 mph in the morning. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Pompeys Pillar MT
 45.98°N 108°W (Elev. 2949 ft)
Last Update:
7:08 pm MDT Mar 9, 2026
Forecast Valid:
8pm MDT Mar 9, 2026-6pm MDT Mar 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation