NWS Forecast for: St Mary MT Issued by: National Weather Service Great Falls, MT Last Update: 6:00 pm MDT Sep 13, 2024

Overnight: A slight chance of rain between 4am and 5am. Cloudy, with a low around 44. Southwest wind around 18 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. Saturday: A 20 percent chance of rain after 9am. Cloudy, then gradually becoming mostly sunny, with a high near 62. Breezy, with a southwest wind 17 to 22 mph, with gusts as high as 31 mph. Saturday Night: Partly cloudy, with a low around 39. Southwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 28 mph. Sunday: A 20 percent chance of rain after noon. Partly sunny, with a high near 61. Southwest wind around 8 mph becoming east in the afternoon. Sunday Night: A 40 percent chance of rain. Cloudy, with a low around 40. East northeast wind around 6 mph becoming calm in the evening. Monday: A 40 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 60. North wind 3 to 7 mph. Monday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 43. Northeast wind around 6 mph becoming calm in the evening. Tuesday: Rain likely, then showers and possibly a thunderstorm after noon. Cloudy, with a high near 53. Calm wind becoming north around 6 mph in the afternoon. Tuesday Night: Showers and possibly a thunderstorm before midnight, then rain likely after midnight. Cloudy, with a low around 40. Wednesday: Rain. Cloudy, with a high near 51. Wednesday Night: A chance of rain. Mostly cloudy, with a low around 39. Thursday: A chance of rain. Partly sunny, with a high near 58. Thursday Night: A slight chance of rain. Mostly cloudy, with a low around 38. Friday: A chance of rain. Partly sunny, with a high near 58.

St Mary MT  48.74°N 113.44°W (Elev. 4554 ft)

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