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

ST. MARY (SRYM8)

Lat: 48.74108°NLon: 113.43289°WElev: 4557.0ft.

NA

47°F

8°C

Humidity 90%
Wind Speed NE 5 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Wind Chill45°F (7°C)
Last update 18 Jun 02:11 AM MDT
Extended Forecast for

6 Miles SSE St Mary MT

  • Overnight

    Overnight: A 30 percent chance of showers, mainly before 4am. Partly cloudy, with a low around 40. West wind around 6 mph.

    Low: 40 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers before noon, then showers likely and possibly a thunderstorm between noon and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 49. West wind 7 to 9 mph becoming north in the afternoon. Chance of precipitation is 60%.

    High: 49 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 38. North wind 5 to 11 mph becoming south after midnight.

    Low: 38 °F

    Chance
    Showers then
    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 57. East southeast wind 8 to 13 mph, with gusts as high as 21 mph.

    High: 57 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43. Southeast wind 8 to 14 mph, with gusts as high as 22 mph.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 61. Southwest wind 8 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    High: 61 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 43. Breezy, with a northwest wind 17 to 22 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 29 mph.

    Low: 43 °F

    Chance
    Showers and
    Breezy then
    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 50. North northwest wind around 10 mph.

    High: 50 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers before midnight. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Chance
    Showers then
    Mostly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of showers, mainly before 4am. Partly cloudy, with a low around 40. West wind around 6 mph.
Thursday
A chance of showers before noon, then showers likely and possibly a thunderstorm between noon and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 49. West wind 7 to 9 mph becoming north in the afternoon. Chance of precipitation is 60%.
Thursday Night
A 50 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 38. North wind 5 to 11 mph becoming south after midnight.
Juneteenth
Mostly sunny, with a high near 57. East southeast wind 8 to 13 mph, with gusts as high as 21 mph.
Friday Night
Partly cloudy, with a low around 43. Southeast wind 8 to 14 mph, with gusts as high as 22 mph.
Saturday
A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 61. Southwest wind 8 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Saturday Night
A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 43. Breezy, with a northwest wind 17 to 22 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 29 mph.
Sunday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 50. North northwest wind around 10 mph.
Sunday Night
A chance of showers before midnight. Mostly cloudy, with a low around 37.
Monday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 53.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Sunny, with a high near 61.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSE St Mary MT
 48.66°N 113.39°W (Elev. 7028 ft)
Last Update:
12:32 am MDT Jun 18, 2026
Forecast Valid:
2am MDT Jun 18, 2026-6pm MDT Jun 24, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation