Transportation Research Center of Ohio Airport Weather Forecast

    • 66
    • 82

    Rain Showers

    • 64
    • 80

    Rain Showers

    • 71
    • 85

    Chance Thunderstorms

    • 67
    • 88

    Rain Showers Likely

    • 61
    • 80

    Slight Chance Thunderstorms

    • 62
    • 80

    Mostly Sunny

Today 13 Aug Union

Partly cloudy Early, then becoming mostly cloudy. Highs in the lower 80s. Southwest Winds around 5 Mph, becoming northwest around 5 Mph late.

Tonight 13 Aug Union

Mostly cloudy. Showers with a chance of Thunderstorms after midnight. Some Thunderstorms may produce heavy rainfall after midnight. Muggy. Lows in the mid 60s. East Winds around 5 Mph. Chance of rain 90 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

    73.1 °F

  • Highest 6 August, 2026

    87.8 °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

    62.6 °F
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