| NWS Forecast for: St Mary MT Issued by: National Weather Service Great Falls, MT Last Update: 2:12 pm MDT Jul 12, 2025 | |
| Tonight: Mostly clear, with a low around 13. West southwest wind 8 to 16 km/h, with gusts as high as 39 km/h. Sunday: Mostly sunny, with a high near 28. West wind 8 to 16 km/h, with gusts as high as 35 km/h. 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 12. West wind 11 to 16 km/h decreasing to 5 to 10 km/h after midnight. Winds could gust as high as 35 km/h. Chance of precipitation is 20%. Monday: A 50 percent chance of showers after noon. Partly sunny, with a high near 21. West southwest wind 5 to 10 km/h becoming north 13 to 18 km/h in the morning. Winds could gust as high as 37 km/h. Monday Night: Showers and possibly a thunderstorm before midnight, then showers likely. Low around 6. North northeast wind around 16 km/h, with gusts as high as 40 km/h. Chance of precipitation is 80%. Tuesday: Showers likely. Cloudy, with a high near 12. Northeast wind 14 to 18 km/h, with gusts as high as 37 km/h. Chance of precipitation is 60%. Tuesday Night: A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 5. East northeast wind 5 to 14 km/h, with gusts as high as 32 km/h. Wednesday: Mostly sunny, with a high near 18. West southwest wind 5 to 13 km/h becoming east in the afternoon. Wednesday Night: Partly cloudy, with a low around 7. Thursday: Mostly sunny, with a high near 21. Thursday Night: Mostly cloudy, with a low around 8. Friday: Mostly sunny, with a high near 23. Friday Night: Partly cloudy, with a low around 10. Saturday: Sunny, with a high near 26. | |
| St Mary MT 48.76°N 113.44°W (Elev. 4741 m) | |
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