Rosy Mound Natural Area Weather Forecast

    • 60
    • 64

    Rain

    • 53
    • 66

    Rain

    • 43
    • 63

    Partly Sunny

    • 46
    • 62

    Partly Sunny

    • 44
    • 62

    Mostly Sunny

    • 42
    • 58

    Mostly Sunny

Today 30 Sep Ottawa

Rain. Highs in the mid 60s. South Winds 5 to 15 Mph. Gusts up to 20 Mph increasing to 30 Mph in the afternoon. Chance of rain 90 percent.

Tonight 30 Sep Ottawa

Rain and a slight chance of Thunderstorms. Lows in the lower 60s. Southwest Winds 5 to 15 Mph. Gusts up to 30 Mph decreasing to 20 Mph after midnight. Chance of rain 80 percent.

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Rosy Mound Natural Area Temperature Statistics

September Temperature

Muskegon, Muskegon County Airport (9.9 miles)

  • Lowest 26 September, 2026

    41.6 °F

  • Average September

    65.5 °F

  • Highest 2 September, 2026

    85.6 °F

Climate (2021–2026)

Muskegon, Muskegon County Airport (9.9 miles)

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  • Average Low 2021–2026

    43.2 °F

  • Average 2021–2026

    51.7 °F

  • Average High 2021–2026

    60 °F
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