Old Union Weather Forecast

    • 69
    • 86

    Rain Showers

    • 68
    • 79

    Rain Showers Likely

    • 69
    • 84

    Chance Thunderstorms

    • 71
    • 86

    Slight Chance Thunderstorms

    • 71
    • 87

    Chance Thunderstorms

    • 69
    • 84

    Chance Thunderstorms

Today 26 May Limestone

Mostly sunny. Highs in the mid 80s. Southeast Winds around 5 Mph.

Tonight 26 May Limestone

Partly cloudy in the evening. A chance of Thunderstorms. Showers. Lows in the upper 60s. Southeast Winds around 5 Mph. Chance of rain 90 percent.

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Old Union Temperature Statistics

May Temperature

Mexia Limestone County Airport (16.8 miles)

  • Lowest 2 May, 2026

    47.8 °F

  • Average May

    70 °F

  • Highest 9 May, 2026

    88 °F

Climate (2021–Present)

Mexia Limestone County Airport (16.8 miles)

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  • Average Low 2021–2026

    58.3 °F

  • Average 2021–2026

    68.3 °F

  • Average High 2021–2026

    79.1 °F
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