Upper Glaston Lake Weather Forecast

    • 48
    • 77

    Increasing Clouds

    • 47
    • 70

    Chance Thunderstorms

    • 45
    • 67

    Chance Rain Showers

    • 46
    • 75

    Mostly Sunny

    • 46
    • 77

    Partly Sunny

    • 45
    • 72

    Mostly Cloudy

Today 14 Sep Northern Sweet Grass

Sunny, warmer. Highs around 80. West Winds 5 to 15 Mph.

Tonight 14 Sep Northern Sweet Grass

Mostly cloudy. Lows around 50. Southwest Winds 5 to 15 Mph.

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Upper Glaston Lake Temperature Statistics

September Temperature

Livingston, Mission Field Airport (37.9 miles)

  • Lowest 6 September, 2025

    33.1 °F

  • Average September

    63.6 °F

  • Highest 3 September, 2025

    91 °F

Climate (2020–Present)

Livingston, Mission Field Airport (37.9 miles)

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  • Average Low 2020–2025

    34.4 °F

  • Average 2020–2025

    47.1 °F

  • Average High 2020–2025

    59.6 °F
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