Square Butte Weather Forecast

    • 60
    • 86

    Decreasing Clouds

    • 55
    • 83

    Partly Sunny

    • 55
    • 86

    Chance Rain Showers

    • 55
    • 79

    Rain Showers Likely

    • 54
    • 75

    Rain Showers Likely

    • 52
    • 71

    Rain Showers

    • 53
    • 72

    Chance Thunderstorms

Today 7 Sep Western and Central Chouteau County

Partly cloudy in the Morning, then mostly cloudy with a 20 percent chance of Thunderstorms in the afternoon. Haze in the morning. Areas of smoke through the day. Highs in the mid 80s. Southwest Winds up to 10 Mph.

Tonight 7 Sep Western and Central Chouteau County

Partly cloudy. A 30 percent chance of Thunderstorms in the evening. Haze and Areas of smoke through the night. Lows 55 to 60. West Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Square Butte Temperature Statistics

September Temperature

Malmstrom Air Force Base (46 miles)

  • Lowest 5 September, 2025

    39.4 °F

  • Average September

    63.9 °F

  • Highest 3 September, 2025

    86.2 °F

Climate (2020–Present)

Malmstrom Air Force Base (46 miles)

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  • Average Low 2020–2025

    35.3 °F

  • Average 2020–2025

    46.9 °F

  • Average High 2020–2025

    58 °F
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