Tracking a Winter Storm; Unusual Early-Season Heat Wave in the Southwest

A major winter storm will organize across the Northern Plains today and then rapidly strengthen as it moves into the Great Lakes on Sunday. Heavy snow and blowing snow are likely to persist over the Great Lakes into Monday night. Dry and gusty winds will produce a critical fire risk across the central/southern Plains. An early heatwave will begin to intensify over the western U.S. into next week. Read More >

Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

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

7°F

-14°C

Humidity	75%
Wind Speed	NA 2 MPH
Barometer	NA
Dewpoint	1°F (-17°C)
Visibility	NA
Last update	14 Mar 11:10 PM MDT

More Information:

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

Extended Forecast for

St Mary MT

Tonight
Low: 2 °F
Chance Snow
Sunday
High: 27 °F
Mostly Sunny
Sunday Night
Low: 21 °F
Chance Snow
Monday
High: 44 °F
Breezy.
Chance Snow
then Chance
Rain/Snow
Monday Night
Low: 39 °F
Chance Rain
and Breezy
Tuesday
High: 50 °F
Slight Chance
Rain and
Windy
Tuesday Night
Low: 42 °F
Chance Rain
and Breezy
Wednesday
High: 52 °F
Slight Chance
Rain
Wednesday Night
Low: 44 °F
Chance Rain

Detailed Forecast

Tonight

A 30 percent chance of snow, mainly before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 2. Light and variable wind. Total nighttime snow accumulation of less than a half inch possible.

Sunday

Mostly sunny, with a high near 27. Wind chill values as low as -5. South southwest wind 5 to 10 mph, with gusts as high as 22 mph.

Sunday Night

A 40 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 21. Southwest wind 8 to 16 mph, with gusts as high as 33 mph. Little or no snow accumulation expected.

Monday

A chance of snow before 3pm, then a chance of rain and snow. Mostly cloudy, with a high near 44. Breezy, with a west southwest wind 21 to 25 mph, with gusts as high as 50 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

Monday Night

A 40 percent chance of rain. Mostly cloudy, with a low around 39. Breezy, with a west southwest wind 23 to 29 mph, with gusts as high as 60 mph.

Tuesday

A 20 percent chance of rain. Partly sunny, with a high near 50. Windy, with a west southwest wind 25 to 31 mph, with gusts as high as 65 mph.

Tuesday Night

A 30 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 42. Breezy, with a west southwest wind 17 to 22 mph, with gusts as high as 47 mph.

Wednesday

A slight chance of rain. Partly sunny, with a high near 52. West southwest wind 18 to 21 mph, with gusts as high as 44 mph.

Wednesday Night

A chance of rain. Mostly cloudy, with a low around 44.

Thursday

A chance of rain, mainly before noon. Partly sunny, with a high near 54.

Thursday Night

A chance of rain. Mostly cloudy, with a low around 45.

Friday

A chance of rain. Partly sunny, with a high near 57.

Friday Night

A chance of rain. Mostly cloudy, with a low around 44.