Barnesville Weather Forecast

    • 42
    • 62

    Partly Sunny

    • 43
    • 59

    Mostly Sunny

    • 50
    • 68

    Partly Sunny

    • 51
    • 73

    Partly Sunny

    • 52
    • 72

    Partly Sunny

    • 56
    • 71

    Mostly Cloudy

Today 21 Dec Lamar

Mostly sunny. Highs in the lower 60s. Light north Winds.

Tonight 21 Dec Lamar

Partly cloudy. Lows in the mid 40s. Northeast Winds 5 to 10 Mph.

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Barnesville Temperature Statistics

December Temperature

Thomaston, Thomaston-Upson County Airport (9.3 miles)

  • Lowest 15 December, 2025

    21.2 °F

  • Average December

    44.1 °F

  • Highest 13 December, 2025

    69.8 °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

    75 °F
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