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

38°F

3°C

Humidity 59%
Wind Speed ENE 3 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Last update 12 Oct 07:00 PM MDT
Extended Forecast for

4 Miles W Pompeys Pillar MT

  • Tonight

    Tonight: Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 32. Light and variable wind.

    Low: 32 °F

    Patchy Fog

  • Tuesday

    Tuesday: Areas of fog before noon. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 55. Light and variable wind.

    High: 55 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 63. Light southwest wind.

    High: 63 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 40. Calm wind becoming west 5 to 8 mph after midnight.

    Low: 40 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 61. North wind 8 to 10 mph.

    High: 61 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33. North northeast wind around 5 mph becoming calm in the evening.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 68. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 68 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42. Calm wind becoming west southwest around 5 mph after midnight.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 32. Light and variable wind.
Tuesday
Areas of fog before noon. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 55. Light and variable wind.
Tuesday Night
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 31. Calm wind.
Wednesday
Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 63. Light southwest wind.
Wednesday Night
Partly cloudy, with a low around 40. Calm wind becoming west 5 to 8 mph after midnight.
Thursday
Sunny, with a high near 61. North wind 8 to 10 mph.
Thursday Night
Mostly clear, with a low around 33. North northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 68. Calm wind becoming south southwest around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 42. Calm wind becoming west southwest around 5 mph after midnight.
Saturday
Sunny, with a high near 75. West southwest wind 6 to 13 mph.
Saturday Night
Mostly clear, with a low around 44. West southwest wind 3 to 5 mph.
Sunday
Mostly sunny, with a high near 71. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 42. Light and variable wind.
Monday
Sunny, with a high near 74. Calm wind becoming south around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Pompeys Pillar MT
 45.97°N 108.03°W (Elev. 2982 ft)
Last Update:
12:32 pm MDT Oct 12, 2026
Forecast Valid:
7pm MDT Oct 12, 2026-6pm MDT Oct 19, 2026
 
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