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Boulder, MT Weather Forecast
Boulder, MT Weather Forecast Date: 336 AM MDT Sun Sep 13 2026
The area/counties/county of: Elkhorn And Boulder Mountains, including the cities of: Montana City, Clancy, Boulder, Corbin, Wickes, Elk Park Pass, and Homestake Pass.or toggle through each period.
Today... Mostly sunny. A 20% chance of rain showers late in the afternoon. Highs 59 to 69. Southeast winds up to 10 mph shifting to the west with gusts to around 30 mph in the afternoon.
Tonight... Mostly cloudy. Chance of rain showers in the evening, then slight chance of rain showers and snow showers after midnight. Lows 32 to 40. West winds 5 to 15 mph with gusts to around 40 mph. Chance of precipitation 50%.
Monday... Partly sunny. Highs 48 to 58. West winds 15 to 20 mph with gusts to around 45 mph.
Monday Night... Mostly clear. Lows 30 to 38. Northwest winds 5 to 10 mph with gusts to around 30 mph shifting to the west after midnight.
Tuesday... Warmer. Mostly sunny. Highs 56 to 66. Southeast winds up to 10 mph.
Tuesday Night... Mostly cloudy. A 20% chance of rain showers after midnight. Lows 34 to 42.
Wednesday... Mostly sunny. Highs 53 to 63.
Wednesday Night... Mostly clear. Lows 33 to 41. Highs 59 to 69.
Thursday... Mostly clear. Lows 33 to 41. Highs 59 to 69.
Thursday Night... Mostly clear. A 20% chance of rain showers after midnight. Lows 36 to 44.
Friday... Mostly clear. Highs 62 to 74. Lows 39 to 45.
POP = Probability of Precipitation
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