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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Current conditions at

WEST GLACIER (WGRM8)

Lat: 48.51061°NLon: 113.99677°WElev: 3165.0ft.

NA

76°F

24°C

Humidity 25%
Wind Speed SSW 2 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Heat Index77°F (25°C)
Last update 17 Jun 02:12 PM MDT
Extended Forecast for

16 Miles WSW St Mary MT

  • This Afternoon

    This Afternoon: A chance of rain and snow showers before 4pm, then rain showers likely. Some thunder is also possible. Snow level 8600 feet. Mostly cloudy, with a high near 53. West northwest wind around 9 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 53 °F

    Rain/Snow
    Likely

  • Tonight

    Tonight: Rain likely, mixing with snow after 11pm, then gradually ending. Some thunder is also possible. Snow level 8800 feet. Mostly cloudy, with a low around 39. North northwest wind 7 to 9 mph becoming southeast after midnight. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 39 °F

    Rain/Snow
    Likely then
    Slight Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow before 2pm, then a slight chance of rain showers after 5pm. Some thunder is also possible. Snow level 8400 feet rising to 9300 feet in the afternoon. Mostly sunny, with a high near 52. West southwest wind around 8 mph becoming northeast in the afternoon. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 52 °F

    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 38. East wind 10 to 14 mph.

    Low: 38 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Sunny, with a high near 58. East wind 6 to 9 mph becoming south southwest in the afternoon.

    High: 58 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain before midnight. Partly cloudy, with a low around 41.

    Low: 41 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain and snow showers between noon and 3pm, then a chance of rain showers after 3pm. Some thunder is also possible. Snow level 8500 feet rising to 9200 feet in the afternoon. Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny
    then Chance
    Rain/Snow

Detailed Forecast

This Afternoon
A chance of rain and snow showers before 4pm, then rain showers likely. Some thunder is also possible. Snow level 8600 feet. Mostly cloudy, with a high near 53. West northwest wind around 9 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Tonight
Rain likely, mixing with snow after 11pm, then gradually ending. Some thunder is also possible. Snow level 8800 feet. Mostly cloudy, with a low around 39. North northwest wind 7 to 9 mph becoming southeast after midnight. Chance of precipitation is 70%. Little or no snow accumulation expected.
Thursday
A chance of rain and snow before 2pm, then a slight chance of rain showers after 5pm. Some thunder is also possible. Snow level 8400 feet rising to 9300 feet in the afternoon. Mostly sunny, with a high near 52. West southwest wind around 8 mph becoming northeast in the afternoon. Chance of precipitation is 30%. Little or no snow accumulation expected.
Thursday Night
Partly cloudy, with a low around 38. East wind 10 to 14 mph.
Juneteenth
Sunny, with a high near 58. East wind 6 to 9 mph becoming south southwest in the afternoon.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Sunny, with a high near 60.
Saturday Night
A slight chance of rain before midnight. Partly cloudy, with a low around 41.
Sunday
A chance of rain and snow showers between noon and 3pm, then a chance of rain showers after 3pm. Some thunder is also possible. Snow level 8500 feet rising to 9200 feet in the afternoon. Mostly sunny, with a high near 50.
Sunday Night
A slight chance of rain before midnight. Snow level 9400 feet lowering to 8900 feet after midnight . Partly cloudy, with a low around 37.
Monday
A slight chance of rain. Snow level 8700 feet rising to 9700 feet in the afternoon. Mostly sunny, with a high near 54.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Sunny, with a high near 61.
Tuesday Night
Partly cloudy, with a low around 46.
Wednesday
A chance of rain. Mostly sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles WSW St Mary MT
 48.69°N 113.78°W (Elev. 8153 ft)
Last Update:
2:01 pm MDT Jun 17, 2026
Forecast Valid:
3pm MDT Jun 17, 2026-6pm MDT Jun 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation