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

0°F

-18°C

Humidity 76%
Wind Speed ENE 5 MPH
Barometer NA
Dewpoint -6°F (-21°C)
Visibility NA
Wind Chill-11°F (-24°C)
Last update 25 Jan 05:30 AM MST
Extended Forecast for

5 Miles W Pompeys Pillar MT

  • Overnight

    Overnight: A 20 percent chance of snow. Cloudy, with a steady temperature around 4. Wind chill values as low as -5. Light northeast wind.

    Low: 4 °F

    Slight Chance
    Snow

  • Sunday

    Sunday: Cloudy through mid morning, then gradual clearing and cold, with a high near 15. Wind chill values as low as -5. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 15 °F

    Cold

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 3. Wind chill values as low as -15. Southwest wind 11 to 21 mph.

    Low: 3 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 41. Wind chill values as low as -5. West southwest wind 22 to 25 mph.

    High: 41 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 22. West southwest wind 5 to 7 mph.

    Low: 22 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 45. West wind 3 to 7 mph.

    High: 45 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 23. West southwest wind around 6 mph.

    Low: 23 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 47. West southwest wind around 7 mph.

    High: 47 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 26. West southwest wind around 6 mph.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of snow. Cloudy, with a steady temperature around 4. Wind chill values as low as -5. Light northeast wind.
Sunday
Cloudy through mid morning, then gradual clearing and cold, with a high near 15. Wind chill values as low as -5. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 3. Wind chill values as low as -15. Southwest wind 11 to 21 mph.
Monday
Sunny, with a high near 41. Wind chill values as low as -5. West southwest wind 22 to 25 mph.
Monday Night
Mostly cloudy, with a low around 22. West southwest wind 5 to 7 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 45. West wind 3 to 7 mph.
Tuesday Night
Mostly clear, with a low around 23. West southwest wind around 6 mph.
Wednesday
Partly sunny, with a high near 47. West southwest wind around 7 mph.
Wednesday Night
Mostly cloudy, with a low around 26. West southwest wind around 6 mph.
Thursday
Partly sunny, with a high near 48. West southwest wind around 7 mph.
Thursday Night
Mostly cloudy, with a low around 27. West wind around 6 mph.
Friday
Partly sunny, with a high near 47. West southwest wind 5 to 7 mph.
Friday Night
Mostly cloudy, with a low around 30. West southwest wind around 7 mph.
Saturday
Partly sunny, with a high near 53. West southwest wind 6 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Pompeys Pillar MT
 45.97°N 108.06°W (Elev. 2986 ft)
Last Update:
2:44 am MST Jan 25, 2026
Forecast Valid:
5am MST Jan 25, 2026-6pm MST Jan 31, 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