Transportation Research Center of Ohio Airport Weather Forecast

    • 58
    • 78

    Decreasing Clouds

    • 64
    • 82

    Chance Rain Showers

    • 63
    • 82

    Chance Thunderstorms

    • 58
    • 80

    Mostly Sunny

    • 61
    • 80

    Partly Sunny

    • 67
    • 85

    Partly Sunny

    • 69
    • 87

    Slight Chance Thunderstorms

Today 25 Aug Union

Mostly sunny. Highs in the upper 70s. Light and variable Winds.

Tonight 25 Aug Union

Partly cloudy. Lows in the upper 50s. Southeast Winds around 5 Mph.

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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

    72.5 °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

    62.5 °F
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