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

33°F

1°C

Humidity 82%
Wind Speed N 2 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 06 Mar 01:00 AM MST
Extended Forecast for

5 Miles W Pompeys Pillar MT

  • Overnight

    Overnight: A slight chance of rain and snow showers before 2am, then a slight chance of snow showers between 2am and 3am. Patchy fog after 2am. Otherwise, cloudy, with a steady temperature around 33. Light north wind. Chance of precipitation is 20%.

    Low: 33 °F

    Slight Chance
    Rain/Snow and
    Patchy Fog

  • Friday

    Friday: A slight chance of snow showers between 9am and 11am. Mostly cloudy, then gradually becoming sunny, with a high near 50. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 50 °F

    Slight Chance
    Snow Showers
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 31. West southwest wind around 7 mph.

    Low: 31 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 62. West southwest wind 8 to 13 mph increasing to 19 to 24 mph in the afternoon.

    High: 62 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 42. West wind 14 to 21 mph.

    Low: 42 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 70. West southwest wind 14 to 19 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 41 mph.

    High: 70 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of rain showers before 11pm, then a chance of rain and snow showers. Mostly cloudy, with a low around 32. North northwest wind 17 to 22 mph decreasing to 8 to 13 mph after midnight. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Chance
    Rain/Snow

  • Monday

    Monday: Snow showers likely before 2pm, then rain and snow showers likely. Mostly cloudy, with a high near 50. Northeast wind 5 to 7 mph. Chance of precipitation is 60%.

    High: 50 °F

    Snow Showers
    Likely then
    Rain/Snow
    Likely

  • Monday Night

    Monday Night: Rain and snow showers before 11pm, then a chance of snow showers. Low around 29. North wind 5 to 9 mph. Chance of precipitation is 80%.

    Low: 29 °F

    Rain/Snow
    then Chance
    Snow Showers

Detailed Forecast

Overnight
A slight chance of rain and snow showers before 2am, then a slight chance of snow showers between 2am and 3am. Patchy fog after 2am. Otherwise, cloudy, with a steady temperature around 33. Light north wind. Chance of precipitation is 20%.
Friday
A slight chance of snow showers between 9am and 11am. Mostly cloudy, then gradually becoming sunny, with a high near 50. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 31. West southwest wind around 7 mph.
Saturday
Mostly sunny, with a high near 62. West southwest wind 8 to 13 mph increasing to 19 to 24 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 42. West wind 14 to 21 mph.
Sunday
Mostly sunny, with a high near 70. West southwest wind 14 to 19 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 41 mph.
Sunday Night
A chance of rain showers before 11pm, then a chance of rain and snow showers. Mostly cloudy, with a low around 32. North northwest wind 17 to 22 mph decreasing to 8 to 13 mph after midnight. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Monday
Snow showers likely before 2pm, then rain and snow showers likely. Mostly cloudy, with a high near 50. Northeast wind 5 to 7 mph. Chance of precipitation is 60%.
Monday Night
Rain and snow showers before 11pm, then a chance of snow showers. Low around 29. North wind 5 to 9 mph. Chance of precipitation is 80%.
Tuesday
A 40 percent chance of snow showers. Mostly cloudy, with a high near 45. West northwest wind 5 to 15 mph.
Tuesday Night
A 20 percent chance of snow showers. Mostly cloudy, with a low around 26. Northwest wind 6 to 13 mph becoming west southwest after midnight.
Wednesday
A slight chance of rain and snow showers. Partly sunny, with a high near 51. West southwest wind 6 to 15 mph. Chance of precipitation is 20%.
Wednesday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 33. West wind 8 to 11 mph. Chance of precipitation is 30%.
Thursday
A chance of rain and snow showers. Partly sunny, with a high near 58. West wind 9 to 14 mph increasing to 17 to 22 mph in the afternoon. Chance of precipitation is 30%.
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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:
12:08 am MST Mar 6, 2026
Forecast Valid:
1am MST Mar 6, 2026-6pm MDT Mar 12, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation