Clayton Weather Forecast

    • 32
    • 67

    Decreasing Clouds

    • 34
    • 67

    Mostly Sunny

    • 35
    • 66

    Mostly Sunny

    • 34
    • 51

    Partly Sunny

    • 46
    • 72

    Partly Sunny

    • 36
    • 71

    Partly Sunny

    • 38
    • 62

    Partly Sunny

Today 15 Dec Union County

Not as cool. Partly cloudy. Highs in the mid 60s. Temperature falling into the mid 50s this afternoon.

Tonight 15 Dec Union County

Cold. Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the lower 30s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Clayton Temperature Statistics

December Temperature

Clayton Municipal Airpark (1.2 miles)

  • Lowest 1 December, 2025

    19 °F

  • Average December

    41 °F

  • Highest 11 December, 2025

    80.1 °F

Climate (2020–Present)

Clayton Municipal Airpark (1.2 miles)

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  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    55.7 °F

  • Average High 2020–2025

    69.5 °F
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