Autumn Temperatures for Eastern Third of the Country; Developing Offshore Coastal Storm

Cooler and less humid conditions for most of the eastern third of the nation as high pressure dominates the weather pattern. Otherwise, rather tranquil weather for most of the nation for the end of the weekend into the start of this week. We continue to monitor a developing coastal storm offshore of the Carolinas; Coastal flooding and beach erosion possible along portions of the Mid-Atlantic. Read More >

Current conditions at

Arrow Creek Hill I-90 MP 468.6 (MTARC)

Lat: 45.78°NLon: 108.16341°WElev: 3924.0ft.

NA

46°F

8°C

Humidity 36%
Wind Speed ENE 5 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Wind Chill44°F (7°C)
Last update 18 Oct 07:45 AM MDT
Extended Forecast for

8 Miles SW Pompeys Pillar MT

  • Today

    Today: Mostly sunny, with a high near 64. Light and variable wind becoming east northeast 5 to 10 mph in the morning.

    High: 64 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 39. East northeast wind 5 to 8 mph becoming light and variable.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 68. Light and variable wind.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42. Light and variable wind.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 70. Southwest wind 5 to 7 mph becoming north in the afternoon.

    High: 70 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42. North northeast wind 5 to 7 mph becoming calm  after midnight.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 68. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 68 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44. Light and variable wind.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 75. Light southwest wind.

    High: 75 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 64. Light and variable wind becoming east northeast 5 to 10 mph in the morning.
Tonight
Mostly clear, with a low around 39. East northeast wind 5 to 8 mph becoming light and variable.
Monday
Sunny, with a high near 68. Light and variable wind.
Monday Night
Mostly clear, with a low around 42. Light and variable wind.
Tuesday
Sunny, with a high near 70. Southwest wind 5 to 7 mph becoming north in the afternoon.
Tuesday Night
Partly cloudy, with a low around 42. North northeast wind 5 to 7 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 68. Calm wind becoming southeast around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 44. Light and variable wind.
Thursday
Sunny, with a high near 75. Light southwest wind.
Thursday Night
A 30 percent chance of showers after midnight. Mostly cloudy, with a low around 48. Light and variable wind.
Friday
Showers likely. Mostly cloudy, with a high near 65. North northwest wind 6 to 13 mph. Chance of precipitation is 60%.
Friday Night
Showers likely. Mostly cloudy, with a low around 41. Northwest wind 11 to 13 mph. Chance of precipitation is 60%.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 54. Southwest wind around 9 mph.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
8 Miles SW Pompeys Pillar MT
 45.93°N 108.09°W (Elev. 3199 ft)
6:32 am MDT Oct 18, 2026
8am MDT Oct 18, 2026-6pm MDT Oct 24, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database