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

44°F

7°C

Humidity 51%
Wind Speed SW 5 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility NA
Wind Chill41°F (5°C)
Last update 14 Oct 11:45 PM MDT
Extended Forecast for

9 Miles WSW Pompeys Pillar MT

  • Overnight

    Overnight: Mostly clear, with a low around 37. West wind 14 to 16 mph.

    Low: 37 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 53. West northwest wind 11 to 16 mph becoming north northeast in the afternoon.

    High: 53 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. Northeast wind 5 to 10 mph becoming light and variable after midnight.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 64. South southwest wind 5 to 9 mph.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41. Southwest wind 7 to 9 mph.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 74. West southwest wind 8 to 11 mph.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 42. West southwest wind around 6 mph.

    Low: 42 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 63. Calm wind becoming east northeast 5 to 8 mph in the afternoon.

    High: 63 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. East wind around 5 mph becoming calm after midnight.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 37. West wind 14 to 16 mph.
Thursday
Sunny, with a high near 53. West northwest wind 11 to 16 mph becoming north northeast in the afternoon.
Thursday Night
Mostly clear, with a low around 29. Northeast wind 5 to 10 mph becoming light and variable after midnight.
Friday
Sunny, with a high near 64. South southwest wind 5 to 9 mph.
Friday Night
Mostly clear, with a low around 41. Southwest wind 7 to 9 mph.
Saturday
Sunny, with a high near 74. West southwest wind 8 to 11 mph.
Saturday Night
Partly cloudy, with a low around 42. West southwest wind around 6 mph.
Sunday
Sunny, with a high near 63. Calm wind becoming east northeast 5 to 8 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 39. East wind around 5 mph becoming calm after midnight.
Monday
Sunny, with a high near 69. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 42. Light and variable wind.
Tuesday
Mostly sunny, with a high near 62. Light and variable wind becoming north 5 to 7 mph in the morning.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 40. North wind 3 to 6 mph.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 56. Light and variable wind becoming north northwest around 6 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles WSW Pompeys Pillar MT
 45.95°N 108.12°W (Elev. 3064 ft)
Last Update:
3:47 pm MDT Oct 14, 2026
Forecast Valid:
12am MDT Oct 15, 2026-6pm MDT Oct 21, 2026
 
Forecast Discussion
 
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