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.

NA

55°F

13°C

Humidity 25%
Wind Speed WSW 16 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Last update 07 Mar 05:30 PM MST
Extended Forecast for

5 Miles W Pompeys Pillar MT

  • Tonight

    Tonight: Partly cloudy, with a low around 42. West southwest wind 14 to 20 mph.

    Low: 42 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 69. West southwest wind 15 to 20 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 69 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A slight chance of rain showers before 11pm, then a chance of rain and snow showers. Mostly cloudy, with a low around 34. West wind 16 to 21 mph becoming north northeast 7 to 12 mph in the evening. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 34 °F

    Chance
    Rain/Snow

  • Monday

    Monday: Rain likely, possibly mixed with snow showers, mainly after 11am. Mostly cloudy, with a high near 48. North northeast wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 48 °F

    Rain/Snow
    Likely

  • Monday Night

    Monday Night: Rain and snow showers likely, becoming all snow after 8pm. Cloudy, with a low around 29. North northeast wind 5 to 10 mph becoming light north northwest after midnight. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 29 °F

    Rain/Snow
    Likely then
    Chance Snow
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of snow showers. Mostly cloudy, with a high near 43. Light west wind becoming west northwest 5 to 10 mph in the morning. New snow accumulation of less than a half inch possible.

    High: 43 °F

    Chance Snow
    Showers

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow showers before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 21. Northwest wind 5 to 14 mph becoming west southwest after midnight. Little or no snow accumulation expected.

    Low: 21 °F

    Chance Snow
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 49. West wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon.

    High: 49 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 10 percent chance of snow showers after 5am. Mostly cloudy, with a low around 33. Southwest wind 8 to 13 mph.

    Low: 33 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 42. West southwest wind 14 to 20 mph.
Sunday
Partly sunny, with a high near 69. West southwest wind 15 to 20 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 40 mph.
Sunday Night
A slight chance of rain showers before 11pm, then a chance of rain and snow showers. Mostly cloudy, with a low around 34. West wind 16 to 21 mph becoming north northeast 7 to 12 mph in the evening. Chance of precipitation is 30%. Little or no snow accumulation expected.
Monday
Rain likely, possibly mixed with snow showers, mainly after 11am. Mostly cloudy, with a high near 48. North northeast wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday Night
Rain and snow showers likely, becoming all snow after 8pm. Cloudy, with a low around 29. North northeast wind 5 to 10 mph becoming light north northwest after midnight. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Tuesday
A 40 percent chance of snow showers. Mostly cloudy, with a high near 43. Light west wind becoming west northwest 5 to 10 mph in the morning. New snow accumulation of less than a half inch possible.
Tuesday Night
A 30 percent chance of snow showers before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 21. Northwest wind 5 to 14 mph becoming west southwest after midnight. Little or no snow accumulation expected.
Wednesday
Partly sunny, with a high near 49. West wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon.
Wednesday Night
A 10 percent chance of snow showers after 5am. Mostly cloudy, with a low around 33. Southwest wind 8 to 13 mph.
Thursday
A slight chance of rain and snow showers before 8am, then a chance of rain showers. Mostly cloudy, with a high near 60. West wind 13 to 23 mph increasing to 23 to 33 mph in the afternoon. Winds could gust as high as 47 mph. Chance of precipitation is 40%.
Thursday Night
Rain and snow showers likely. Mostly cloudy, with a low around 28. Northwest wind 19 to 24 mph decreasing to 9 to 14 mph after midnight. Chance of precipitation is 70%.
Friday
Snow showers likely. Mostly cloudy, with a high near 44. Northwest wind 8 to 11 mph. Chance of precipitation is 60%.
Friday Night
A 50 percent chance of snow showers. Mostly cloudy, with a low around 27. West southwest wind 7 to 10 mph.
Saturday
A 50 percent chance of snow showers. Mostly cloudy, with a high near 45. West southwest wind 7 to 14 mph becoming north northwest in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Pompeys Pillar MT
 45.97°N 108.06°W (Elev. 2986 ft)
Last Update:
5:33 pm MST Mar 7, 2026
Forecast Valid:
5pm MST Mar 7, 2026-6pm MDT Mar 14, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation