Old Union Weather Forecast

    • 53
    • 75

    Increasing Clouds

    • 53
    • 67

    Partly Sunny

    • 63
    • 75

    Partly Sunny

    • 60
    • 76

    Partly Sunny

    • 58
    • 75

    Partly Sunny

    • 58
    • 77

    Partly Sunny

Today 20 Dec Limestone

Mostly sunny. Warmer with Highs in the mid 70s. South Winds 10 to 15 Mph.

Tonight 20 Dec Limestone

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 50s. Southwest Winds 5 to 10 Mph.

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Old Union Temperature Statistics

December Temperature

Mexia Limestone County Airport (16.8 miles)

  • Lowest 15 December, 2025

    26.1 °F

  • Average December

    47.2 °F

  • Highest 18 December, 2025

    71.1 °F

Climate (2020–Present)

Mexia Limestone County Airport (16.8 miles)

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  • Average Low 2020–2025

    58 °F

  • Average 2020–2025

    67.9 °F

  • Average High 2020–2025

    78.6 °F
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