Square Butte Weather Forecast
- 50
- 78
Mostly Sunny
- 52
- 79
Mostly Sunny
- 56
- 85
Mostly Sunny
- 50
- 79
Slight Chance Rain
- 49
- 72
Mostly Sunny
- 51
- 82
Mostly Sunny
- 53
- 84
Mostly Sunny
Today 18 Sep Western and Central Chouteau County
Sunny. Highs 75 to 80. East Winds up to 10 Mph.
Tonight 18 Sep Western and Central Chouteau County
Mostly clear. Lows 45 to 50. East Winds up to 10 Mph.
Square Butte Temperature Statistics
September Temperature
Malmstrom Air Force Base (46 miles)
Lowest 5 September, 2025
39.4 °FAverage September
65.3 °FHighest 3 September, 2025
86.2 °F
Climate (2020–Present)
Malmstrom Air Force Base (46 miles)
Average Low 2020–2025
35.4 °FAverage 2020–2025
47 °FAverage High 2020–2025
58 °F