Bertha Brock Park Weather Forecast

    • 41
    • 64

    Chance Rain Showers

    • 39
    • 66

    Partly Sunny

    • 44
    • 70

    Mostly Sunny

    • 52
    • 77

    Partly Sunny

    • 52
    • 81

    Mostly Sunny

    • 46
    • 77

    Mostly Sunny

    • 47
    • 76

    Mostly Sunny

Today 6 Sep Ionia

Mostly cloudy with a 20 percent chance of rain Showers. Highs in the mid 60s. West Winds 10 to 15 Mph with Gusts to around 25 Mph.

Tonight 6 Sep Ionia

Mostly cloudy in the evening then becoming partly cloudy. A 40 percent chance of rain Showers. Lows in the lower 40s. West Winds around 10 Mph.

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Bertha Brock Park Temperature Statistics

September Temperature

Ionia County Airport (3.7 miles)

  • Lowest 1 September, 2025

    48.2 °F

  • Average September

    60.8 °F

  • Highest 2 September, 2025

    78.8 °F

Climate (2020–Present)

Ionia County Airport (3.7 miles)

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  • Average Low 2020–2025

    40.9 °F

  • Average 2020–2025

    49.9 °F

  • Average High 2020–2025

    58.9 °F
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