Transportation Research Center of Ohio Airport Weather Forecast

    • 46
    • 65

    Increasing Clouds

    • 46
    • 68

    Mostly Sunny

    • 48
    • 68

    Mostly Sunny

    • 50
    • 67

    Mostly Sunny

    • 54
    • 70

    Partly Sunny

    • 59
    • 71

    Chance Rain Showers

Today 25 Sep Union

Partly cloudy. Highs in the mid 60s. Northeast Winds 5 to 10 Mph.

Tonight 25 Sep Union

Partly cloudy in the Evening, then clearing. Lows in the mid 40s. North Winds 5 to 10 Mph.

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Transportation Research Center of Ohio Airport Temperature Statistics

September Temperature

Marysville Union County Airport (11.2 miles)

  • Lowest 14 September, 2026

    51.8 °F

  • Average September

    71.6 °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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