Barnesville Weather Forecast

    • 61
    • 84

    Sunny

    • 62
    • 86

    Mostly Sunny

    • 61
    • 86

    Mostly Sunny

    • 63
    • 86

    Mostly Sunny

    • 64
    • 87

    Mostly Sunny

    • 65
    • 90

    Mostly Sunny

    • 64
    • 90

    Mostly Sunny

Today 13 Sep Lamar

Sunny. Highs in the mid 80s. Northeast Winds 5 to 10 Mph.

Tonight 13 Sep Lamar

Clear. Lows in the lower 60s. Light northeast Winds.

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Barnesville Temperature Statistics

September Temperature

Thomaston, Thomaston-Upson County Airport (9.3 miles)

  • Lowest 10 September, 2025

    55.4 °F

  • Average September

    71.5 °F

  • Highest 5 September, 2025

    89.6 °F

Climate (2020–Present)

Thomaston, Thomaston-Upson County Airport (9.3 miles)

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  • Average Low 2020–2025

    54.4 °F

  • Average 2020–2025

    64 °F

  • Average High 2020–2025

    74.9 °F
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