| NWS Forecast for: St Mary MT Issued by: National Weather Service Great Falls, MT Last Update: 10:25 am MDT Jul 13, 2025 |  |
| Today: Partly sunny, with a high near 83. West southwest wind 7 to 11 mph, with gusts as high as 22 mph. Tonight: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 8pm. Partly cloudy, with a low around 56. West southwest wind 6 to 11 mph becoming light southwest. Winds could gust as high as 23 mph. Chance of precipitation is 20%. Monday: Showers likely, with thunderstorms also possible after 3pm. Increasing clouds, with a high near 71. Light and variable wind becoming north 8 to 13 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Monday Night: Showers and possibly a thunderstorm before midnight, then showers likely. Low around 42. North wind around 13 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. Tuesday: A 50 percent chance of showers. Mostly cloudy, with a high near 56. Northeast wind around 11 mph, with gusts as high as 24 mph. Tuesday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 40. Northeast wind 5 to 9 mph becoming northwest after midnight. Winds could gust as high as 18 mph. Wednesday: Mostly sunny, with a high near 68. South wind 3 to 7 mph. Wednesday Night: Mostly clear, with a low around 46. Southeast wind 5 to 7 mph becoming light and variable after midnight. Thursday: Mostly sunny, with a high near 71. Thursday Night: Mostly cloudy, with a low around 48. Friday: Mostly sunny, with a high near 75. Friday Night: Partly cloudy, with a low around 51. Saturday: Mostly sunny, with a high near 79. | |
| St Mary MT 48.74°N 113.44°W (Elev. 4554 ft) | |
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