Old Union Weather Forecast

    • 66
    • 82

    Chance Thunderstorms

    • 65
    • 80

    Chance Thunderstorms

    • 66
    • 81

    Chance Thunderstorms

    • 69
    • 83

    Rain Showers

    • 68
    • 80

    Rain Showers

    • 69
    • 82

    Chance Thunderstorms

Today 23 May Limestone

Mostly cloudy with a slight chance of Showers and Thunderstorms in the Morning, then partly sunny with a chance of Showers and Thunderstorms in the afternoon. Highs in the lower 80s. South Winds around 5 Mph. Chance of rain 40 percent.

Tonight 23 May Limestone

Mostly cloudy. Slight chance of Thunderstorms after Midnight, then chance of Thunderstorms early in the morning. Near steady temperature in the upper 60s. South Winds up to 5 Mph. Chance of Thunderstorms 50 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

    69.7 °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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