Big Timber Weather Forecast

    • 44
    • 71

    Gradual Clearing

    • 48
    • 77

    Mostly Sunny

    • 41
    • 72

    Mostly Sunny

    • 43
    • 69

    Partly Sunny

    • 47
    • 75

    Partly Sunny

    • 41
    • 68

    Partly Sunny

Today 28 Sep Northern Sweet Grass

Decreasing Clouds. Warmer. Scattered rain Showers early in the Morning, then isolated rain Showers late in the morning. Isolated Showers and Thunderstorms late in the afternoon. Highs in the lower 70s. Southwest Winds 5 to 10 Mph. Chance of precipitation 30 percent.

Tonight 28 Sep Northern Sweet Grass

Mostly clear. Lows in the mid 40s. Southwest Winds 5 to 10 Mph.

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Big Timber Temperature Statistics

September Temperature

Livingston, Mission Field Airport (25.5 miles)

  • Lowest 15 September, 2026

    31.6 °F

  • Average September

    59.9 °F

  • Highest 10 September, 2026

    86.6 °F

Climate (2021–2026)

Livingston, Mission Field Airport (25.5 miles)

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  • Average Low 2021–2026

    34.7 °F

  • Average 2021–2026

    47.5 °F

  • Average High 2021–2026

    60.2 °F
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