Union Valley Weather Forecast

    • 31
    • 61

    Mostly Cloudy

    • 25
    • 44

    Becoming Sunny

    • 38
    • 51

    Partly Sunny

    • 51
    • 61

    Mostly Cloudy

    • 58
    • 69

    Mostly Cloudy

    • 42
    • 72

    Mostly Sunny

    • 51
    • 65

    Partly Sunny

Today 13 Dec Hunt

Cloudy. Highs in the lower 60s. Northwest Winds around 5 Mph.

Tonight 13 Dec Hunt

Mostly cloudy. A slight chance of drizzle this evening. Cooler with Lows around 30. North Winds 10 to 15 Mph, increasing to 15 to 20 Mph after midnight. Wind chill Values as low as 18 after midnight.

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Union Valley Temperature Statistics

December Temperature

Rockwall Municipal Airport (10.6 miles)

  • Lowest 2 December, 2025

    29.8 °F

  • Average December

    44.3 °F

  • Highest 11 December, 2025

    65.3 °F

Climate (2020–Present)

Rockwall Municipal Airport (10.6 miles)

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  • Average Low 2020–2025

    57.4 °F

  • Average 2020–2025

    66.6 °F

  • Average High 2020–2025

    76.7 °F
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