Hazardous Coastal Conditions for the Mid-Atlantic; Storm System Approaching Southern Alaska

A Nor'easter will create hazardous marine and coastal conditions along the Mid-Atlantic coast through mid-week, with significant coastal flooding and beach erosion possible. Meanwhile, another strong storm system is forecast to bring high winds and heavy precipitation to portions of southern Alaska. Elsewhere, relatively benign weather is expected through the first half of the work week. Read More >

Current conditions at

HORSE THIEF (HORM8)

Lat: 46.42581°NLon: 108.6745°WElev: 3414.0ft.

NA

37°F

3°C

Humidity 76%
Wind Speed W 1 MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility NA
Last update 19 Oct 12:39 AM MDT
Extended Forecast for

Roundup MT

  • Overnight

    Overnight: Mostly clear, with a low around 34. Calm wind.

    Low: 34 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 70. Light south southwest wind becoming southwest 5 to 9 mph in the morning.

    High: 70 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. Calm wind becoming southwest around 6 mph after midnight.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 65. Light and variable wind becoming north northeast 5 to 10 mph in the afternoon.

    High: 65 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 35. North northeast wind 5 to 7 mph becoming calm  in the evening.

    Low: 35 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 66. Calm wind becoming south around 6 mph in the afternoon.

    High: 66 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41. Light and variable wind.

    Low: 41 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 74. Southwest wind 5 to 7 mph.

    High: 74 °F

    Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of showers after midnight.  Mostly cloudy, with a low around 45. Light and variable wind.

    Low: 45 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 34. Calm wind.
Monday
Sunny, with a high near 70. Light south southwest wind becoming southwest 5 to 9 mph in the morning.
Monday Night
Mostly clear, with a low around 40. Calm wind becoming southwest around 6 mph after midnight.
Tuesday
Sunny, with a high near 65. Light and variable wind becoming north northeast 5 to 10 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 35. North northeast wind 5 to 7 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 66. Calm wind becoming south around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 41. Light and variable wind.
Thursday
Sunny, with a high near 74. Southwest wind 5 to 7 mph.
Thursday Night
A 50 percent chance of showers after midnight. Mostly cloudy, with a low around 45. Light and variable wind.
Friday
Showers. High near 59. Northwest wind 5 to 10 mph increasing to 13 to 18 mph in the afternoon. Chance of precipitation is 80%.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 34. West northwest wind 14 to 20 mph.
Saturday
Mostly sunny, with a high near 51. West wind 8 to 10 mph.
Saturday Night
Partly cloudy, with a low around 30. North northeast wind around 6 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 51. Southwest wind 5 to 7 mph.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Roundup MT
 46.45°N 108.53°W (Elev. 3219 ft)
12:32 am MDT Oct 19, 2026
1am MDT Oct 19, 2026-6pm MDT Oct 25, 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