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Duncan, MT Weather Forecast

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Duncan, MT Weather Forecast

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Duncan MT weather - Clear - 39°F
Clear
39°F
Updated 4:02 am
Feels Like 29°F
Humidity 75%
Wind SW 5 mph
Barometer  30.21 in
Dew Point 32°F
Duncan MT weather - Clear - 4°C
Clear
4°C
Updated 4:02 am
Feels Like -2°C
Humidity 75%
Wind SW 8 km/h
Barometer  102.3 kPa
Dew Point 0°C
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Duncan Weather Forecast

TODAY TONIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY
Duncan, MT Weather - Today Mostly Sunny Duncan, MT Weather - Tonight Partly Cloudy Duncan, MT Weather - Sunday Mostly Sunny Duncan, MT Weather - Sunday Night Mostly Clear Duncan, MT Weather - Monday Mostly Sunny Duncan, MT Weather - Monday Night Mostly Cloudy Duncan, MT Weather - Tuesday Mostly Cloudy Duncan, MT Weather - Wednesday Partly Cloudy Duncan, MT Weather - Wednesday Night Partly Cloudy Duncan, MT Weather - Thursday Chance Of Rain Duncan, MT Weather - Thursday Night Rain And Snow Duncan, MT Weather - Friday Rain And Snow
Mostly Sunny Partly Cloudy Mostly Sunny Mostly Clear Mostly Sunny Mostly Cloudy Mostly Cloudy Partly Cloudy Partly Cloudy Chance of Rain Rain and Snow Rain and Snow
Hi: 62°FHi: 17°C
 Lo: 37°FLo: 3°C Hi: 56°FHi: 13°C
 Lo: 37°FLo: 3°C Hi: 61°FHi: 16°C
 Hi: 55°FHi: 13°C
Lo: 38°FLo: 3°C		 Hi: 55°FHi: 13°C
Lo: 38°FLo: 3°C		 Hi: 57°FHi: 14°C
Lo: 39°FLo: 4°C		 Hi: 57°FHi: 14°C
Lo: 39°FLo: 4°C		 Hi: 56°FHi: 13°C
 Lo: 36°FLo: 2°C Hi: 41°FHi: 5°C
POP: 20% POP: 70% POP: 50%
POP = Probability of Precipitation.
Weather Outlook Updated: 1232 AM MDT Sat Oct 17 2026 Duncan, MT Weather - WeatherWorld.com

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Duncan Forecast Discussion

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Issued: 1215 AM MDT Sat Oct 17 2026

Key Messages

  • High Winds will lead to dangerous travel, especially for high profile vehicles, and backcountry recreation along the Rocky Mountain Front and portions of the Hi-Line through this evening.
  • Highs will be well above normal today, with temperatures cooling to near normal on Sunday.
  • Overall dry conditions are expected through Monday, with low chances for precipitation arriving on Tuesday across Southwest and Central Montana.

Discussion

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  • Meteorological Overview:

    • Upper level ridging over th...