Severe Thunderstorm, Flooding, and Winter Weather Threats on Tuesday

Scattered severe thunderstorms are forecast Tuesday from the southern Plains into the southern Great Lakes vicinity. Thunderstorms may also produce heavy to excessive rain that could pose a flooding threat from central Texas into southern Oklahoma and northern Missouri into southern Michigan. A heavy wintry mix is forecast for the Great Lakes into northern Maine. Read More >

Hazardous Weather Conditions

High Wind Watch in effect from March 11, 06:00 PM MDT until March 12, 06:00 PM MDT
Winter Storm Watch in effect from March 11, 06:00 PM MDT until March 13, 06:00 PM MDT

Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

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

22°F

-6°C

Humidity	75%
Wind Speed	NA 3 MPH
Barometer	NA
Dewpoint	15°F (-9°C)
Visibility	NA
Last update	10 Mar 04:10 AM MDT

More Information:

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

Extended Forecast for

St Mary MT

Winter Storm Watch March 11, 06:00pm until March 13, 06:00pm

High Wind Watch March 11, 06:00pm until March 12, 06:00pm

Click here for hazard details and duration

Winter Storm Watch

High Wind Watch

Overnight
Low: 16 °F
Chance Snow
Tuesday
High: 30 °F
Snow Likely
Tuesday Night
Low: 19 °F
Chance Snow
Wednesday
High: 35 °F
Snow Likely
Wednesday Night
Low: 29 °F
Snow and
Patchy
Blowing Snow
Thursday
High: 38 °F
Snow and
Breezy
Thursday Night
Low: 23 °F
Snow
Friday
High: 33 °F
Heavy Snow
Friday Night
Low: 13 °F
Heavy Snow

Detailed Forecast

Overnight

A 40 percent chance of snow. Mostly cloudy, with a low around 16. South southwest wind around 6 mph. Total nighttime snow accumulation of less than a half inch possible.

Tuesday

Snow likely, mainly before noon. Partly sunny, with a high near 30. West wind 7 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Tuesday Night

A chance of snow before 9pm, then a chance of snow after 2am. Partly cloudy, with a low around 19. Southwest wind around 11 mph, with gusts as high as 26 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

Wednesday

Snow likely, mainly after noon. Mostly cloudy, with a high near 35. West southwest wind 11 to 15 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

Wednesday Night

Snow. Patchy blowing snow after 3am. Low around 29. West southwest wind 11 to 21 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

Thursday

Snow. High near 38. Breezy, with a west wind 21 to 28 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Thursday Night

Snow. Low around 23. West southwest wind 6 to 16 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

Friday

Snow. The snow could be heavy at times. Cloudy, with a high near 33. West wind 6 to 9 mph, with gusts as high as 23 mph.

Friday Night

Snow. The snow could be heavy at times. Cloudy, with a low around 13.

Saturday

Snow. Cloudy, with a high near 26.

Saturday Night

A chance of snow. Mostly cloudy, with a low around 10.

Sunday

Mostly cloudy, with a high near 31.

Sunday Night

A chance of snow. Mostly cloudy, with a low around 22.