Transportation Research Center of Ohio Airport Weather Forecast

    • 68
    • 83

    Increasing Clouds

    • 61
    • 84

    Rain Showers

    • 55
    • 73

    Mostly Sunny

    • 56
    • 76

    Mostly Sunny

    • 61
    • 79

    Partly Sunny

    • 64
    • 83

    Mostly Sunny

Today 20 Jul Union

Patchy smoke in the morning. Mostly sunny. Highs in the lower 80s. Southeast Winds around 5 Mph, becoming south around 5 Mph in the afternoon.

Tonight 20 Jul Union

Partly cloudy. A chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the upper 60s. South Winds 5 to 10 Mph. Chance of rain 30 percent.

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Transportation Research Center of Ohio Airport Temperature Statistics

July Temperature

Marysville Union County Airport (11.2 miles)

  • Lowest 8 July, 2026

    62.6 °F

  • Average July

    77.8 °F

  • Highest 3 July, 2026

    95 °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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