Old Union Weather Forecast

    • 65
    • 81

    Chance Thunderstorms

    • 64
    • 82

    Chance Thunderstorms

    • 60
    • 83

    Mostly Sunny

    • 59
    • 85

    Sunny

    • 60
    • 86

    Sunny

    • 61
    • 86

    Mostly Sunny

    • 63
    • 88

    Mostly Sunny

Today 3 Oct Limestone

Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms. Highs in the upper 70s. Northeast Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 3 Oct Limestone

Mostly cloudy. A 30 percent chance of Showers and Thunderstorms after midnight. Lows in the mid 60s. North Winds 5 to 10 Mph.

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Old Union Temperature Statistics

October Temperature

Mexia Limestone County Airport (16.8 miles)

  • Lowest 1 October, 2026

    71.1 °F

  • Average October

    75.1 °F

  • Highest 1 October, 2026

    81.9 °F

Climate (2021–2026)

Mexia Limestone County Airport (16.8 miles)

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  • Average Low 2021–2026

    58.4 °F

  • Average 2021–2026

    68.4 °F

  • Average High 2021–2026

    79.3 °F
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