Bertha Brock Park Weather Forecast

    • 61
    • 77

    Slight Chance Thunderstorms

    • 50
    • 76

    Partly Sunny

    • 57
    • 77

    Mostly Sunny

    • 60
    • 80

    Mostly Cloudy

    • 60
    • 78

    Chance Rain Showers

    • 65
    • 80

    Rain Showers Likely

Today 9 Sep Ionia

Showers likely and a chance of Thunderstorms. Highs in the upper 70s. Southwest Winds 10 to 15 Mph with Gusts to around 30 Mph. Chance of rain 90 percent.

Tonight 9 Sep Ionia

Partly cloudy. Lows in the lower 60s. West Winds 5 to 10 Mph. Gusts up to 25 Mph in the evening.

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Bertha Brock Park Temperature Statistics

September Temperature

Ionia County Airport (3.7 miles)

  • Lowest 6 September, 2026

    53.6 °F

  • Average September

    72 °F

  • Highest 2 September, 2026

    93.2 °F

Climate (2021–2026)

Ionia County Airport (3.7 miles)

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  • Average Low 2021–2026

    40.9 °F

  • Average 2021–2026

    50 °F

  • Average High 2021–2026

    59 °F
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