Transportation Research Center of Ohio Airport Weather Forecast

    • 68
    • 83

    Thunderstorms Likely

    • 64
    • 84

    Chance Thunderstorms

    • 68
    • 84

    Chance Rain Showers

    • 70
    • 86

    Rain Showers Likely

    • 66
    • 84

    Rain Showers Likely

    • 64
    • 81

    Rain Showers Likely

Today 7 Aug Union

Partly cloudy with a chance of Showers and Thunderstorms this Morning, then mostly cloudy with Showers and Thunderstorms likely this afternoon. Highs in the mid 80s. South Winds 5 to 10 Mph, becoming southwest late. Chance of rain 70 percent.

Tonight 7 Aug Union

Partly cloudy. Showers likely with a chance of Thunderstorms in the Evening, then a chance of Showers and Thunderstorms after midnight. Muggy. Lows in the upper 60s. Southwest Winds 5 to 10 Mph. Chance of rain 70 percent.

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Transportation Research Center of Ohio Airport Temperature Statistics

August Temperature

Marysville Union County Airport (11.2 miles)

  • Lowest 4 August, 2026

    50 °F

  • Average August

    71.1 °F

  • Highest 5 August, 2026

    86 °F

Climate (2021–2026)

Marysville Union County Airport (11.2 miles)

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  • Average Low 2021–2026

    43.1 °F

  • Average 2021–2026

    52.7 °F

  • Average High 2021–2026

    62.5 °F
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