| NWS Forecast for: St Mary MT Issued by: National Weather Service Great Falls, MT Last Update: 8:28 pm MDT Jul 12, 2025 | |
| Tonight: Mostly clear, with a low around 56. South wind 5 to 7 mph. Sunday: Mostly sunny, with a high near 84. West southwest wind 5 to 10 mph, with gusts as high as 21 mph. Sunday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 54. West southwest wind 5 to 9 mph becoming light southwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 20%. Monday: A 50 percent chance of showers after noon. Partly sunny, with a high near 72. Light and variable wind becoming north 6 to 11 mph in the morning. Winds could gust as high as 23 mph. Monday Night: Showers and possibly a thunderstorm before midnight, then showers likely. Low around 44. North northeast wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. Tuesday: Showers likely. Cloudy, with a high near 56. Northeast wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. Tuesday Night: A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 42. East northeast wind 5 to 9 mph becoming light northeast after midnight. Wednesday: Mostly sunny, with a high near 66. Light and variable wind becoming east 5 to 7 mph in the afternoon. Wednesday Night: Partly cloudy, with a low around 45. Thursday: Mostly sunny, with a high near 72. Thursday Night: Mostly cloudy, with a low around 49. Friday: Mostly sunny, with a high near 76. Friday Night: Partly cloudy, with a low around 51. Saturday: Sunny, with a high near 79. | |
| St Mary MT 48.74°N 113.44°W (Elev. 4554 ft) | |
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