Old Union Weather Forecast

    • 71
    • 97

    Hot

    • 73
    • 97

    Hot

    • 73
    • 97

    Slight Chance Thunderstorms

    • 72
    • 95

    Partly Sunny

    • 71
    • 94

    Partly Sunny

    • 69
    • 93

    Partly Sunny

Today 19 Sep Limestone

Sunny. Highs in the upper 90s. South Winds 5 to 10 Mph.

Tonight 19 Sep Limestone

Mostly clear. Lows in the lower 70s. South Winds 5 to 10 Mph.

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Old Union Temperature Statistics

September Temperature

Mexia Limestone County Airport (16.8 miles)

  • Lowest 2 September, 2026

    71.8 °F

  • Average September

    83.3 °F

  • Highest 12 September, 2026

    99 °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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