Cottage Grove Weather Forecast

    • 57
    • 79

    Becoming Sunny

    • 60
    • 81

    Mostly Sunny

    • 64
    • 83

    Mostly Cloudy

    • 62
    • 77

    Thunderstorms Likely

    • 61
    • 79

    Rain Showers Likely

    • 63
    • 81

    Chance Thunderstorms

Today 29 Jul Union

Partly cloudy. Near steady Temperatures in the upper 70s. North Winds 5 to 10 Mph.

Tonight 29 Jul Union

Clear. Lows in the upper 50s. North Winds 5 to 10 Mph.

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Cottage Grove Temperature Statistics

July Temperature

Cincinnati W Airport (23.6 miles)

  • Lowest 23 July, 2026

    51.8 °F

  • Average July

    76.1 °F

  • Highest 3 July, 2026

    95 °F

Climate (2021–2026)

Cincinnati W Airport (23.6 miles)

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  • Average Low 2021–2026

    44.2 °F

  • Average 2021–2026

    54.4 °F

  • Average High 2021–2026

    65 °F
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