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

76°F

24°C

Humidity 9%
Wind Speed W 10 MPH
Barometer NA
Dewpoint 13°F (-11°C)
Visibility NA
Heat Index75°F (24°C)
Last update 20 Apr 05:01 PM MDT
Extended Forecast for

5 Miles W Pompeys Pillar MT

  • Tonight

    Tonight: Partly cloudy, with a low around 45. West southwest wind around 6 mph becoming southeast in the evening.

    Low: 45 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87. West southwest wind 5 to 8 mph becoming south in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 52. Southeast wind 3 to 7 mph.

    Low: 52 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 84. West southwest wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Chance of precipitation is 30%.

    High: 84 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers, mainly after midnight. Low around 40. West wind 18 to 21 mph. Chance of precipitation is 80%.

    Low: 40 °F

    Chance
    Showers then
    Showers

  • Thursday

    Thursday: Showers, mainly before noon. High near 49. West northwest wind 25 to 30 mph, with gusts as high as 41 mph. Chance of precipitation is 80%.

    High: 49 °F

    Showers then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of rain showers before 9pm, then a chance of rain and snow showers between 9pm and midnight, then a chance of snow showers after midnight. Mostly cloudy, with a low around 31. West northwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 31 °F

    Chance
    Rain/Snow
    then Chance
    Snow Showers

  • Friday

    Friday: A 30 percent chance of snow showers. Partly sunny, with a high near 47. Northwest wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon.

    High: 47 °F

    Chance Snow
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 26. North northwest wind 9 to 14 mph becoming light west northwest after midnight.

    Low: 26 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 45. West southwest wind around 6 mph becoming southeast in the evening.
Tuesday
Mostly sunny, with a high near 87. West southwest wind 5 to 8 mph becoming south in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 52. Southeast wind 3 to 7 mph.
Wednesday
A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 84. West southwest wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Chance of precipitation is 30%.
Wednesday Night
Showers, mainly after midnight. Low around 40. West wind 18 to 21 mph. Chance of precipitation is 80%.
Thursday
Showers, mainly before noon. High near 49. West northwest wind 25 to 30 mph, with gusts as high as 41 mph. Chance of precipitation is 80%.
Thursday Night
A chance of rain showers before 9pm, then a chance of rain and snow showers between 9pm and midnight, then a chance of snow showers after midnight. Mostly cloudy, with a low around 31. West northwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Chance of precipitation is 30%. Little or no snow accumulation expected.
Friday
A 30 percent chance of snow showers. Partly sunny, with a high near 47. Northwest wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 26. North northwest wind 9 to 14 mph becoming light west northwest after midnight.
Saturday
Partly sunny, with a high near 49. Light west wind becoming north northwest 5 to 9 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 26. North wind 5 to 8 mph becoming calm after midnight.
Sunday
Mostly sunny, with a high near 53. Calm wind becoming north northeast around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 30. North northeast wind 5 to 7 mph becoming calm after midnight.
Monday
Mostly sunny, with a high near 59. Calm wind becoming west northwest around 6 mph 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:
1:18 pm MDT Apr 20, 2026
Forecast Valid:
5pm MDT Apr 20, 2026-6pm MDT Apr 27, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation