Duncan Airport Weather Forecast
- 13
- 38
Mostly Sunny
- 16
- 38
Mostly Cloudy
- 28
- 40
Snow Likely
- 18
- 42
Snow Likely
- 1
- 27
Snow Likely
- -1
- 11
Snow Likely
Today 29 Jan Upper Blackfoot and MacDonald Pass
Sunny. Highs 30 to 35. West Winds 5 to 15 Mph. Gusts up to 30 Mph in the afternoon.
Tonight 29 Jan Upper Blackfoot and MacDonald Pass
Mostly clear. Lows 15 to 20. West Winds 5 to 15 Mph with Gusts to around 30 Mph.
Duncan Airport Temperature Statistics
January Temperature
Helena Regional Airport (8.7 miles)
Lowest 20 January, 2025
-10.2 °FAverage January
21.6 °FHighest 16 January, 2025
52.6 °F
Climate (2020–Present)
Helena Regional Airport (8.7 miles)
Take a look at our website widgetsAvailable free! Find Out MoreAverage Low 2020–2025
36.2 °FAverage 2020–2025
47.5 °FAverage High 2020–2025
59.3 °F