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Duncan, MT Weather Forecast
Duncan, MT Weather Forecast Date: 336 AM MDT Thu Aug 06 2026
The area/counties/county of: Upper Blackfoot And Macdonald Pass, including the cities of: Marysville, Lincoln, Flesher Pass, and Macdonald Pass.or toggle through each period.
Today... Sunny. Areas of smoke. Highs 74 to 84. West winds 5 to 15 mph.
Tonight... Mostly clear. Areas of smoke. Lows 49 to 55. West winds up to 10 mph. Gusts up to 25 mph in the evening.
Friday... Sunny. Patchy smoke. Highs 78 to 88. Southwest winds up to 5 mph shifting to the west 5 to 15 mph in the afternoon.
Friday Night... Mostly clear. Patchy smoke in the evening. Lows 53 to 59. West winds up to 10 mph. Gusts up to 25 mph in the evening.
Saturday... Sunny. Highs 80 to 90. West winds up to 15 mph.
Saturday Night... Mostly clear. Lows 50 to 59. Highs 75 to 87.
Sunday... Mostly clear. Lows 50 to 59. Highs 75 to 87.
Monday... Mostly clear. Lows 50 to 59. Highs 75 to 87.
Tuesday... Sunny. Highs 76 to 84.
Tuesday Night... Mostly clear. Lows 50 to 56. Highs 73 to 83.
POP = Probability of Precipitation
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