John Ball Reservoir Weather Forecast

    • 57
    • 81

    Slight Chance Rain Showers

    • 56
    • 81

    Partly Sunny

    • 51
    • 76

    Chance Rain Showers

    • 49
    • 76

    Partly Sunny

    • 50
    • 77

    Mostly Sunny

Today 14 Sep McCone

Partly sunny. Highs in the upper 70s. West wind around 5 Mph.

Tonight 14 Sep McCone

Mostly cloudy. Lows in the mid 50s. East wind around 5 Mph, becoming south around 5 Mph after midnight.

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John Ball Reservoir Temperature Statistics

September Temperature

Wolf Point, Clayton Airport (36 miles)

  • Lowest 6 September, 2025

    30 °F

  • Average September

    62.8 °F

  • Highest 1 September, 2025

    91 °F

Climate (2020–Present)

Wolf Point, Clayton Airport (36 miles)

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  • Average Low 2020–2025

    31.1 °F

  • Average 2020–2025

    44.5 °F

  • Average High 2020–2025

    57.7 °F
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