Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

HORSE THIEF (HORM8)

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

34°F

1°C

Humidity	57%
Wind Speed	SSW 1 MPH
Barometer	NA
Dewpoint	20°F (-7°C)
Visibility	NA
Last update	27 Dec 09:39 AM MST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Roundup MT

Today
High: 38 °F⇓
Slight Chance
Snow Showers
Tonight
Low: 3 °F
Decreasing
Clouds
Sunday
High: 24 °F
Sunny
Sunday Night
Low: 15 °F⇑
Mostly Clear
Monday
High: 44 °F
Mostly Sunny
Monday Night
Low: 26 °F
Mostly Cloudy
Tuesday
High: 48 °F
Mostly Cloudy
Tuesday Night
Low: 24 °F
Mostly Cloudy
Wednesday
High: 41 °F
Slight Chance
Rain/Snow

Detailed Forecast

Today

A 20 percent chance of snow showers. Mostly cloudy, with a temperature falling to around 15 by 5pm. Wind chill values as low as zero. North wind 16 to 22 mph.

Tonight

Mostly cloudy, then gradually becoming mostly clear, with a low around 3. Wind chill values as low as -5. North wind 12 to 17 mph decreasing to 5 to 10 mph after midnight.

Sunday

Sunny, with a high near 24. Wind chill values as low as -5. Light and variable wind.

Sunday Night

Mostly clear, with a temperature falling to near 15 by 10pm, then rising to around 21 during the remainder of the night. Calm wind becoming southwest around 6 mph after midnight.

Monday

Mostly sunny, with a high near 44. Southwest wind 9 to 11 mph.

Monday Night

Mostly cloudy, with a low around 26. West southwest wind around 8 mph.

Tuesday

Mostly cloudy, with a high near 48. West southwest wind 6 to 8 mph.

Tuesday Night

Mostly cloudy, with a low around 24. West southwest wind around 7 mph.

Wednesday

A slight chance of rain and snow showers. Mostly cloudy, with a high near 41. West southwest wind 6 to 8 mph becoming northeast in the afternoon. Chance of precipitation is 20%.

Wednesday Night

Mostly cloudy, with a low around 17. East northeast wind around 6 mph becoming light and variable after midnight.

New Year's Day

Partly sunny, with a high near 42. South southwest wind 3 to 6 mph.

Thursday Night

Mostly cloudy, with a low around 25. Light southwest wind.

Friday

A slight chance of rain and snow showers. Mostly cloudy, with a high near 50. Southwest wind 5 to 7 mph. Chance of precipitation is 20%.