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

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

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

NA

78°F

26°C

Humidity 19%
Wind Speed NA 4 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Heat Index77°F (25°C)
Last update 26 May 04:10 PM MDT
Extended Forecast for

5 Miles SW St Mary MT

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm. Cloudy, with a high near 81. East northeast wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 81 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 48. East wind 5 to 7 mph becoming west in the evening. Chance of precipitation is 70%.

    Low: 48 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers before noon, then a chance of showers and thunderstorms between noon and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 77. East northeast wind around 6 mph. Chance of precipitation is 70%.

    High: 77 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely before 11pm, then a slight chance of showers after 5am. Mostly cloudy, with a low around 49. Light and variable wind. Chance of precipitation is 70%.

    Low: 49 °F

    Showers
    Likely then
    Partly Cloudy

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 83. Calm wind becoming east 5 to 7 mph in the afternoon. Chance of precipitation is 60%.

    High: 83 °F

    Mostly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Partly cloudy, with a low around 53. East southeast wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 53 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 81. Light west southwest wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 21 mph.

    High: 81 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 49. West southwest wind 7 to 9 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Showers
    Likely

  • Saturday

    Saturday: Rain likely, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 62.

    High: 62 °F

    Showers

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm. Cloudy, with a high near 81. East northeast wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Tonight
Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 48. East wind 5 to 7 mph becoming west in the evening. Chance of precipitation is 70%.
Wednesday
A chance of showers before noon, then a chance of showers and thunderstorms between noon and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 77. East northeast wind around 6 mph. Chance of precipitation is 70%.
Wednesday Night
Showers and thunderstorms likely before 11pm, then a slight chance of showers after 5am. Mostly cloudy, with a low around 49. Light and variable wind. Chance of precipitation is 70%.
Thursday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 83. Calm wind becoming east 5 to 7 mph in the afternoon. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Partly cloudy, with a low around 53. East southeast wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 30%.
Friday
A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 81. Light west southwest wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 21 mph.
Friday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 49. West southwest wind 7 to 9 mph, with gusts as high as 20 mph.
Saturday
Rain likely, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 62.
Saturday Night
Rain. Mostly cloudy, with a low around 42.
Sunday
Rain likely. Mostly cloudy, with a high near 56.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 39.
Monday
A chance of rain. Partly sunny, with a high near 60.
Monday Night
A chance of rain. Mostly cloudy, with a low around 40.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW St Mary MT
 48.69°N 113.52°W (Elev. 4491 ft)
Last Update:
3:07 pm MDT May 26, 2026
Forecast Valid:
4pm MDT May 26, 2026-6pm MDT Jun 2, 2026
 
Forecast Discussion
 
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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