Old Union Weather Forecast

    • 41
    • 56

    Decreasing Clouds

    • 31
    • 64

    Becoming Sunny

    • 40
    • 55

    Sunny

    • 35
    • 65

    Mostly Sunny

    • 32
    • 56

    Mostly Sunny

    • 38
    • 61

    Mostly Sunny

    • 39
    • 62

    Partly Sunny

Today 13 Jan Limestone

Mostly cloudy with a chance of Sprinkles. Highs in the upper 50s. Southwest Winds 5 to 10 Mph.

Tonight 13 Jan Limestone

Mostly cloudy this Evening, then becoming partly cloudy. Lows in the lower 40s. Southwest Winds around 5 Mph.

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Old Union Temperature Statistics

January Temperature

Mexia Limestone County Airport (16.8 miles)

  • Lowest 11 January, 2026

    32 °F

  • Average January

    58 °F

  • Highest 2 January, 2026

    82.4 °F

Climate (2021–Present)

Mexia Limestone County Airport (16.8 miles)

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  • Average Low 2021–2026

    58.2 °F

  • Average 2021–2026

    68 °F

  • Average High 2021–2026

    78.7 °F
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