National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Hazardous Weather Conditions

Current conditions at

FLATTOP MTN. (FTMM8)

Lat: 48.80225°NLon: 113.85713°WElev: 6300.0ft.

NA

33°F

1°C

Humidity 97%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 18 Mar 05:00 AM MDT
Extended Forecast for

16 Miles W St Mary MT

High Wind Warning until March 18, 09:00pm
Click here for hazard details and duration
High Wind Warning
  •  
    High Wind Warning until March 18, 09:00pm

    NOW until 9:00pm Wed

    High Wind Warning

  • This Afternoon

    High: 36 °F

    Slight Chance
    Snow and
    Breezy

  • Tonight

    Tonight: A 30 percent chance of snow, mainly before 2am. Mostly cloudy, with a low around 31. Windy, with a southwest wind 23 to 30 mph, with gusts as high as 37 mph. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Chance Snow
    and Windy

  • Thursday

    Thursday: A chance of snow before 3pm, then a chance of rain and snow. Partly sunny, with a high near 36. Windy, with a southwest wind 26 to 30 mph, with gusts as high as 41 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Chance
    Rain/Snow and
    Windy

  • Thursday Night

    Thursday Night: A chance of rain and snow. Mostly cloudy, with a low around 33. Breezy, with a southwest wind around 26 mph, with gusts as high as 36 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 33 °F

    Chance
    Rain/Snow and
    Breezy

  • Friday

    Friday: Rain, possibly mixed with snow. High near 37. Breezy, with a southwest wind around 24 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Rain/Snow and
    Breezy

  • Friday Night

    Friday Night: Rain, possibly mixed with snow, becoming all snow after midnight. Low around 27. Breezy, with a southwest wind 23 to 25 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Breezy.
    Rain/Snow
    then Snow
    Likely

  • Saturday

    Saturday: Snow likely, mainly before noon. Mostly cloudy, with a high near 30. West southwest wind 17 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    High: 30 °F

    Snow Likely

  • Saturday Night

    Saturday Night: A chance of snow before midnight. Partly cloudy, with a low around 17. Southwest wind 15 to 21 mph, with gusts as high as 26 mph.

    Low: 17 °F

    Chance Snow
    then Mostly
    Clear

Detailed Forecast

This Afternoon
A 20 percent chance of snow. Mostly cloudy, with a high near 36. Breezy, with a southwest wind around 22 mph, with gusts as high as 30 mph.
Tonight
A 30 percent chance of snow, mainly before 2am. Mostly cloudy, with a low around 31. Windy, with a southwest wind 23 to 30 mph, with gusts as high as 37 mph. New snow accumulation of less than a half inch possible.
Thursday
A chance of snow before 3pm, then a chance of rain and snow. Partly sunny, with a high near 36. Windy, with a southwest wind 26 to 30 mph, with gusts as high as 41 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 33. Breezy, with a southwest wind around 26 mph, with gusts as high as 36 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Friday
Rain, possibly mixed with snow. High near 37. Breezy, with a southwest wind around 24 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday Night
Rain, possibly mixed with snow, becoming all snow after midnight. Low around 27. Breezy, with a southwest wind 23 to 25 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Saturday
Snow likely, mainly before noon. Mostly cloudy, with a high near 30. West southwest wind 17 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
A chance of snow before midnight. Partly cloudy, with a low around 17. Southwest wind 15 to 21 mph, with gusts as high as 26 mph.
Sunday
Sunny, with a high near 29. Breezy.
Sunday Night
Partly cloudy, with a low around 20. Breezy.
Monday
Mostly cloudy, with a high near 32. Breezy.
Monday Night
A slight chance of snow. Mostly cloudy, with a low around 23. Breezy.
Tuesday
Snow likely. Mostly cloudy, with a high near 31. Breezy.
Tuesday Night
Snow. Mostly cloudy, with a low around 22. Breezy.
Wednesday
Snow likely. Mostly cloudy, with a high near 28. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
16 Miles W St Mary MT
 48.79°N 113.77°W (Elev. 7480 ft)
Last Update:
5:36 pm MDT Mar 18, 2026
Forecast Valid:
5pm MDT Mar 18, 2026-6pm MDT Mar 25, 2026
 
Forecast Discussion
 
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Additional Resources

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