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 14%
Wind Speed WSW 5 MPH
Barometer NA
Dewpoint 7°F (-14°C)
Visibility NA
Last update 20 Apr 05:02 AM MDT
Extended Forecast for

5 Miles W Pompeys Pillar MT

  • Today

    Today: Sunny, with a high near 80. West wind 3 to 7 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 42. Southwest wind around 5 mph becoming light and variable.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87. South southwest wind around 6 mph.

    High: 87 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 52. South wind around 6 mph becoming calm in the evening.

    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 81. Light southwest wind becoming west southwest 11 to 16 mph in the morning. Chance of precipitation is 40%.

    High: 81 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm, then rain after midnight. Low around 39. West wind 16 to 20 mph. Chance of precipitation is 90%.

    Low: 39 °F

    Showers
    Likely then
    Rain

  • Thursday

    Thursday: Rain, mainly before noon. High near 48. Northwest wind 22 to 30 mph, with gusts as high as 41 mph. Chance of precipitation is 80%.

    High: 48 °F

    Rain then
    Chance Rain

  • 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 30. West northwest wind 17 to 22 mph decreasing to 10 to 15 mph after midnight. Chance of precipitation is 30%.

    Low: 30 °F

    Chance
    Rain/Snow
    then Chance
    Snow Showers

  • Friday

    Friday: A chance of snow showers before 3pm, then a chance of rain and snow showers. Partly sunny, with a high near 48. North northwest wind 9 to 16 mph. Chance of precipitation is 40%.

    High: 48 °F

    Chance Snow
    Showers then
    Chance
    Rain/Snow

Detailed Forecast

Today
Sunny, with a high near 80. West wind 3 to 7 mph.
Tonight
Partly cloudy, with a low around 42. Southwest wind around 5 mph becoming light and variable.
Tuesday
Mostly sunny, with a high near 87. South southwest wind around 6 mph.
Tuesday Night
Mostly cloudy, with a low around 52. South wind around 6 mph becoming calm in the evening.
Wednesday
A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 81. Light southwest wind becoming west southwest 11 to 16 mph in the morning. Chance of precipitation is 40%.
Wednesday Night
Showers likely and possibly a thunderstorm, then rain after midnight. Low around 39. West wind 16 to 20 mph. Chance of precipitation is 90%.
Thursday
Rain, mainly before noon. High near 48. Northwest wind 22 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 30. West northwest wind 17 to 22 mph decreasing to 10 to 15 mph after midnight. Chance of precipitation is 30%.
Friday
A chance of snow showers before 3pm, then a chance of rain and snow showers. Partly sunny, with a high near 48. North northwest wind 9 to 16 mph. Chance of precipitation is 40%.
Friday Night
A 20 percent chance of snow showers. Mostly cloudy, with a low around 27. North northwest wind 5 to 15 mph.
Saturday
Mostly sunny, with a high near 50. West wind 5 to 10 mph.
Saturday Night
Mostly cloudy, with a low around 28. North wind 5 to 9 mph becoming light north northeast after midnight.
Sunday
A slight chance of rain and snow showers. Partly sunny, with a high near 51. North northeast wind 3 to 8 mph. Chance of precipitation is 20%.
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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:
12:48 am MDT Apr 20, 2026
Forecast Valid:
5am MDT Apr 20, 2026-6pm MDT Apr 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation