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.

NA

14°F

-10°C

Humidity 64%
Wind Speed NA 8 MPH
Barometer NA
Dewpoint 4°F (-16°C)
Visibility NA
Wind Chill3°F (-16°C)
Last update 14 Mar 12:10 PM MDT
Extended Forecast for

St Mary MT

Blizzard Warning March 14, 12:49pm until March 14, 06:00pm
Click here for hazard details and duration
Blizzard Warning
  •  
    Blizzard Warning March 14, 12:49pm until March 14, 06:00pm

    NOW until 6:00pm Sat

    Blizzard Warning

  • This Afternoon

    High: 22 °F

    Snow Likely

  • Tonight

    Tonight: A 50 percent chance of snow, mainly before midnight.  Mostly cloudy, then gradually becoming mostly clear, with a low around 2. North northeast wind 5 to 8 mph becoming calm  in the evening.  New snow accumulation of less than a half inch possible.

    Low: 2 °F

    Chance Snow
    then Slight
    Chance Snow

  • Sunday

    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.

    High: 27 °F

    Mostly Sunny

  • Sunday Night

    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.

    Low: 21 °F

    Chance Snow

  • Monday

    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.

    High: 44 °F

    Breezy.
    Chance Snow
    then Chance
    Rain/Snow

  • Monday Night

    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.

    Low: 39 °F

    Chance Rain
    and Breezy

  • Tuesday

    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.

    High: 50 °F

    Slight Chance
    Rain and
    Windy

  • Tuesday Night

    Tuesday Night: A 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.

    Low: 42 °F

    Chance Rain
    and Breezy

Detailed Forecast

This Afternoon
Snow likely, mainly before 2pm. Mostly cloudy, with a high near 22. Wind chill values as low as zero. North wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
A 50 percent chance of snow, mainly before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 2. North northeast wind 5 to 8 mph becoming calm in the evening. New 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 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.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 44.
Thursday
A chance of rain. 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.
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ABOUT THIS FORECAST

 
Point Forecast:
St Mary MT
 48.74°N 113.44°W (Elev. 4554 ft)
12:36 pm MDT Mar 14, 2026
12pm MDT Mar 14, 2026-6pm MDT Mar 20, 2026
 
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