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

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

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

-8°F

-22°C

Humidity	68%
Wind Speed	NA 2 MPH
Barometer	NA
Dewpoint	-16°F (-27°C)
Visibility	NA
Last update	18 Feb 01:10 AM MST

More Information:

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

Extended Forecast for

St Mary MT

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

Extreme Cold Warning February 18, 01:30am until February 18, 12:00pm

Click here for hazard details and duration

Cold Weather Advisory

Extreme Cold Warning

Extreme Cold Warning February 18, 01:30am until February 18, 12:00pm
NOW until 12:00pm Wed
Extreme Cold Warning
Overnight
Low: -10 °F
Mostly Cloudy
Wednesday
High: -3 °F
Chance Snow
Wednesday Night
Low: -10 °F
Slight Chance
Snow then
Mostly Cloudy
Thursday
High: 22 °F
Mostly Sunny
Thursday Night
Low: 9 °F
Partly Cloudy
Friday
High: 28 °F
Slight Chance
Snow
Friday Night
Low: 13 °F
Mostly Cloudy
Saturday
High: 28 °F
Slight Chance
Snow

Detailed Forecast

Overnight

Mostly cloudy, with a low around -10. Wind chill values as low as -25. North northeast wind around 8 mph.

Wednesday

A 30 percent chance of snow after 2pm. Mostly cloudy and cold, with a high near -3. Wind chill values as low as -25. North northeast wind 7 to 9 mph. New snow accumulation of less than a half inch possible.

Wednesday Night

A 20 percent chance of snow before midnight. Cloudy, then gradually becoming partly cloudy, with a low around -10. Wind chill values as low as -25. North northeast wind 3 to 7 mph.

Thursday

Mostly sunny, with a high near 22. Wind chill values as low as -15. Light and variable wind becoming southwest around 5 mph in the afternoon.

Thursday Night

Partly cloudy, with a low around 9. West southwest wind 3 to 5 mph.

Friday

A 20 percent chance of snow after 11am. Mostly sunny, with a high near 28. West southwest wind 5 to 8 mph, with gusts as high as 18 mph.

Friday Night

Mostly cloudy, with a low around 13. West southwest wind 6 to 8 mph, with gusts as high as 18 mph.

Saturday

A slight chance of snow after 11am. Mostly sunny, with a high near 28. West southwest wind around 6 mph becoming east northeast in the afternoon.

Saturday Night

A slight chance of snow. Mostly cloudy, with a low around 7.