Transportation Research Center of Ohio Airport Weather Forecast

    • 51
    • 74

    Becoming Sunny

    • 53
    • 74

    Mostly Sunny

    • 62
    • 79

    Partly Sunny

    • 61
    • 82

    Rain Showers Likely

    • 52
    • 68

    Chance Rain Showers

    • 53
    • 66

    Chance Rain Showers

Today 28 Sep Union

Mostly Sunny, then becoming partly cloudy late this Morning, then becoming sunny. Highs in the mid 70s. North Winds around 5 Mph.

Tonight 28 Sep Union

Mostly clear. Patchy fog after midnight. Lows around 50. North Winds around 5 Mph in the Evening, becoming light and variable.

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Transportation Research Center of Ohio Airport Temperature Statistics

September Temperature

Marysville Union County Airport (11.2 miles)

  • Lowest 25 September, 2026

    39.2 °F

  • Average September

    70.5 °F

  • Highest 1 September, 2026

    93.2 °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

    52.8 °F

  • Average High 2021–2026

    62.6 °F
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