Critical Fire Weather in the High Plains; Heavy Snow in the Western Mountains and Northern Plains

Gusty winds and low relative humidity will bring critical fire weather to the central and southern High Plains Wednesday. Two Pacific storms will continue impacting the mountains of the western U.S. into Thursday with gusty winds and heavy snow. Heavy snow and gusty winds will continue to impact the northern Plains into the central Great Lakes Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

ST. MARY (SRYM8)

Lat: 48.74108°NLon: 113.43289°WElev: 4557.0ft.

-6°F

-21°C

Humidity	71%
Wind Speed	E 3 MPH
Barometer	NA
Dewpoint	-13°F (-25°C)
Visibility	NA
Last update	17 Feb 11:11 PM MST

More Information:

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

Extended Forecast for

7 Miles S St Mary MT

Cold Weather Advisory February 18, 12:00pm until February 19, 12:00pm

Extreme Cold Warning February 17, 11:51pm until February 18, 12:00pm

Click here for hazard details and duration

Cold Weather Advisory

Extreme Cold Warning

Extreme Cold Warning February 17, 11:51pm until February 18, 12:00pm
NOW until 12:00pm Wed
Extreme Cold Warning
Tonight
Low: -17 °F
Mostly Cloudy
and Blustery
Wednesday
High: -10 °F
Chance Snow
and Blustery
Wednesday Night
Low: -18 °F
Chance Snow
Thursday
High: 8 °F
Slight Chance
Snow
Thursday Night
Low: 1 °F
Slight Chance
Snow
Friday
High: 13 °F
Chance Snow
and Breezy
Friday Night
Low: 5 °F
Slight Chance
Snow and
Breezy
Saturday
High: 15 °F
Slight Chance
Snow

Detailed Forecast

Tonight

Mostly cloudy, with a low around -17. Wind chill values as low as -45. Blustery, with a west northwest wind 22 to 24 mph becoming north northeast after midnight. Winds could gust as high as 31 mph.

Wednesday

A 50 percent chance of snow, mainly after 4pm. Mostly cloudy and cold, with a high near -10. Wind chill values as low as -45. Blustery, with an east northeast wind around 22 mph, with gusts as high as 29 mph. New snow accumulation of less than a half inch possible.

Wednesday Night

A 30 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around -18. Wind chill values as low as -45. Northeast wind 11 to 18 mph becoming west southwest after midnight. Winds could gust as high as 23 mph. New snow accumulation of less than a half inch possible.

Thursday

A 20 percent chance of snow. Mostly sunny, with a high near 8. Wind chill values as low as -30. Southwest wind 10 to 14 mph, with gusts as high as 21 mph.

Thursday Night

A 20 percent chance of snow. Mostly cloudy, with a low around 1. West southwest wind 14 to 16 mph, with gusts as high as 20 mph.

Friday

A 30 percent chance of snow, mainly after 11am. Partly sunny, with a high near 13. Breezy, with a west southwest wind 17 to 23 mph, with gusts as high as 31 mph. Little or no snow accumulation expected.

Friday Night

A 20 percent chance of snow. Mostly cloudy, with a low around 5. Breezy, with a west southwest wind 21 to 24 mph, with gusts as high as 31 mph.

Saturday

A slight chance of snow after 11am. Partly sunny, with a high near 15. West wind 15 to 18 mph becoming northeast in the afternoon. Winds could gust as high as 23 mph.

Saturday Night

A slight chance of snow. Mostly cloudy, with a low around -1.

Sunday

A chance of snow. Mostly cloudy, with a high near 12.

Sunday Night

A chance of snow. Mostly cloudy, with a low around 6.

Monday

A chance of snow. Partly sunny, with a high near 24. Breezy.

Monday Night

Snow likely. Mostly cloudy, with a low around 15. Breezy.

Tuesday

A chance of snow. Partly sunny, with a high near 21. Breezy.