Clayton Lake State Park Weather Forecast

    • 57
    • 87

    Decreasing Clouds

    • 55
    • 79

    Partly Sunny

    • 53
    • 73

    Rain Showers Likely

    • 54
    • 71

    Rain Showers

    • 54
    • 68

    Rain Showers Likely

    • 55
    • 72

    Chance Rain Showers

Today 19 Sep Union County

Partly cloudy in the Morning, then mostly sunny with isolated Showers and Thunderstorms in the afternoon. Highs in the upper 80s. West Winds around 15 Mph, becoming southwest in the afternoon. Chance of rain 20 percent.

Tonight 19 Sep Union County

Partly cloudy with isolated Showers. Lows in the upper 50s. Southwest Winds around 15 Mph in the evening. Chance of rain 20 percent.

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Clayton Lake State Park Temperature Statistics

September Temperature

Clayton Municipal Airpark (11.8 miles)

  • Lowest 13 September, 2026

    54.6 °F

  • Average September

    76.8 °F

  • Highest 3 September, 2026

    96.7 °F

Climate (2021–2026)

Clayton Municipal Airpark (11.8 miles)

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  • Average Low 2021–2026

    43 °F

  • Average 2021–2026

    56.7 °F

  • Average High 2021–2026

    70.8 °F
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