Square Butte Weather Forecast

    • 44
    • 61

    Mostly Cloudy

    • 49
    • 73

    Rain Showers

    • 43
    • 61

    Breezy

    • 47
    • 63

    Slight Chance Rain Showers

    • 46
    • 63

    Mostly Sunny

    • 49
    • 73

    Mostly Sunny

    • 50
    • 73

    Partly Sunny

Today 12 Sep Western and Central Chouteau County

Cloudy. A 20 percent chance of rain Showers early in the afternoon. Near steady temperature in the upper 50s. Northeast Winds 5 to 10 Mph.

Tonight 12 Sep Western and Central Chouteau County

Mostly cloudy in the evening then becoming partly cloudy. Lows in the lower 40s. East Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Square Butte Temperature Statistics

September Temperature

Malmstrom Air Force Base (46 miles)

  • Lowest 9 September, 2026

    47.5 °F

  • Average September

    64.5 °F

  • Highest 2 September, 2026

    87.7 °F

Climate (2021–2026)

Malmstrom Air Force Base (46 miles)

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  • Average Low 2021–2026

    36 °F

  • Average 2021–2026

    47.7 °F

  • Average High 2021–2026

    59.1 °F
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