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 >

Hazardous Weather Conditions

Cold Weather Advisory until December 28, 05:00 AM MST

Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

Lat: 48.74111°NLon: 113.43306°WElev: 4550.0ft.

-11°F

-24°C

Humidity	74%
Wind Speed	NA 0 MPH
Barometer	NA
Dewpoint	-17°F (-27°C)
Visibility	NA
Last update	28 Dec 12:10 AM MST

More Information:

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

Extended Forecast for

6 Miles W St Mary MT

Cold Weather Advisory December 28, 12:52am until December 28, 05:00am

Click here for hazard details and duration

Cold Weather Advisory

Cold Weather Advisory December 28, 12:52am until December 28, 05:00am
NOW until 5:00am Sun
Cold Weather Advisory
Overnight
Low: -3 °F⇑
Partly Cloudy
Sunday
High: 13 °F
Mostly Sunny
then Mostly
Sunny and
Breezy
Sunday Night
Low: 10 °F⇑
Partly Cloudy
and Windy
Monday
High: 19 °F
Partly Sunny
and Windy
Monday Night
Low: 19 °F
Mostly Cloudy
and Breezy
Tuesday
High: 25 °F
Partly Sunny
then Partly
Sunny and
Breezy
Tuesday Night
Low: 23 °F
Mostly Cloudy
and Breezy
Wednesday
High: 28 °F
Partly Sunny
and Breezy
then Partly
Sunny

Detailed Forecast

Overnight

Partly cloudy, with a temperature rising to around 3 by 5am. Wind chill values as low as -20. West wind 11 to 18 mph, with gusts as high as 26 mph.

Sunday

Mostly sunny, with a high near 13. Wind chill values as low as -20. Breezy, with a west wind 21 to 25 mph, with gusts as high as 40 mph.

Sunday Night

Partly cloudy, with a temperature rising to around 15 by 5am. Wind chill values as low as -10. Windy, with a west southwest wind 29 to 32 mph, with gusts as high as 45 mph.

Monday

Partly sunny, with a high near 19. Wind chill values as low as -5. Windy, with a west southwest wind 26 to 30 mph, with gusts as high as 43 mph.

Monday Night

Mostly cloudy, with a low around 19. Breezy, with a west southwest wind 23 to 29 mph, with gusts as high as 41 mph.

Tuesday

Partly sunny, with a high near 25. Breezy, with a west southwest wind 18 to 22 mph, with gusts as high as 34 mph.

Tuesday Night

Mostly cloudy, with a low around 23. Breezy, with a west southwest wind around 22 mph, with gusts as high as 36 mph.

Wednesday

Partly sunny, with a high near 28. Breezy, with a west southwest wind 16 to 22 mph, with gusts as high as 34 mph.

Wednesday Night

Mostly cloudy, with a low around 23.