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

56°F

13°C

Humidity 31%
Wind Speed E 10 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 05 Apr 05:00 PM MDT
Extended Forecast for

5 Miles SW Pompeys Pillar MT

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. East northeast wind 8 to 10 mph.

    Low: 36 °F

    Mostly Cloudy

  • Monday

    Monday: Cloudy, with a high near 56. East northeast wind 7 to 10 mph.

    High: 56 °F

    Cloudy

  • Monday Night

    Monday Night: Cloudy, then gradually becoming partly cloudy, with a low around 34. East wind 5 to 9 mph becoming calm after midnight.

    Low: 34 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 76. Light southwest wind becoming west southwest 11 to 16 mph in the morning.

    High: 76 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Rain showers likely before midnight, then a slight chance of rain and snow showers between midnight and 3am, then a slight chance of snow showers after 3am. Some thunder is also possible. Mostly cloudy, with a low around 37. West wind 10 to 14 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 37 °F

    Showers
    Likely then
    Slight Chance
    Rain/Snow

  • Wednesday

    Wednesday: A 20 percent chance of snow showers before noon. Mostly sunny, with a high near 55. West northwest wind 8 to 16 mph.

    High: 55 °F

    Slight Chance
    Snow Showers
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 29. North wind 9 to 14 mph becoming light and variable after midnight.

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 57. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 57 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 32. East wind 3 to 7 mph.

    Low: 32 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 36. East northeast wind 8 to 10 mph.
Monday
Cloudy, with a high near 56. East northeast wind 7 to 10 mph.
Monday Night
Cloudy, then gradually becoming partly cloudy, with a low around 34. East wind 5 to 9 mph becoming calm after midnight.
Tuesday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 76. Light southwest wind becoming west southwest 11 to 16 mph in the morning.
Tuesday Night
Rain showers likely before midnight, then a slight chance of rain and snow showers between midnight and 3am, then a slight chance of snow showers after 3am. Some thunder is also possible. Mostly cloudy, with a low around 37. West wind 10 to 14 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday
A 20 percent chance of snow showers before noon. Mostly sunny, with a high near 55. West northwest wind 8 to 16 mph.
Wednesday Night
Partly cloudy, with a low around 29. North wind 9 to 14 mph becoming light and variable after midnight.
Thursday
Sunny, with a high near 57. Calm wind becoming east northeast around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 32. East wind 3 to 7 mph.
Friday
Sunny, with a high near 66. Calm wind becoming east southeast 5 to 7 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 40. East southeast wind 5 to 7 mph becoming calm after midnight.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 74. Calm wind becoming west southwest around 5 mph in the afternoon.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 40. Northwest wind around 6 mph.
Sunday
A 50 percent chance of showers. Partly sunny, with a high near 61. North wind 6 to 13 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Pompeys Pillar MT
 45.95°N 108.03°W (Elev. 3081 ft)
Last Update:
1:52 pm MDT Apr 5, 2026
Forecast Valid:
5pm MDT Apr 5, 2026-6pm MDT Apr 12, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation