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Duncan Weather Forecast
Duncan, MT Weather Forecast Date: 347 AM MDT Thu Aug 13 2026
Weather forecast for Duncan, MT
Today Hi: 62°FHi: 17°C Lo: 48°F Lo: 9°C |
Today... Cloudy in the morning then becoming partly sunny. Chance of rain showers in the morning. Chance of thunderstorms in the afternoon. Highs 57 to 65. Northeast winds up to 10 mph. Chance of precipitation 50%. |
| Fri Hi: 60°FHi: 16°C Lo: 47°F Lo: 8°C |
Friday... Cloudy. Chance of rain showers in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 55 to 63. Northeast winds up to 10 mph. Chance of precipitation 50%. |
| Sat Hi: 70°FHi: 21°C Lo: 49°F Lo: 9°C |
Saturday... Warmer. Partly sunny. A 20% chance of thunderstorms in the afternoon. Highs 65 to 73. South winds up to 5 mph. |
| Sun Hi: 74°FHi: 23°C Lo: 52°F Lo: 11°C |
Sunday... Sunny. A 20% chance of thunderstorms in the afternoon. Highs 69 to 77. |
| Mon Hi: 74°FHi: 23°C Lo: 52°F Lo: 11°C |
Monday... Partly sunny. A 20% chance of thunderstorms in the afternoon. Highs 68 to 78. |
| Tue Hi: 72°FHi: 22°C Lo: 51°F Lo: 11°C |
Tuesday... Mostly cloudy. Chance of rain showers and slight chance of thunderstorms. Lows 47 to 55. Highs 67 to 75. Chance of precipitation 40%. |
| Wed Hi: 70°FHi: 21°C |
Wednesday... Mostly sunny. Chance of rain showers in the morning, then slight chance of thunderstorms in the afternoon. Highs 65 to 73. Chance of precipitation 30%. |
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