Diamond Lake Weather Forecast

    • 52
    • 76

    Becoming Sunny

    • 55
    • 78

    Partly Sunny

    • 69
    • 82

    Mostly Cloudy

    • 61
    • 83

    Partly Sunny

    • 53
    • 74

    Partly Sunny

    • 55
    • 77

    Partly Sunny

Today 6 Sep Shiawassee

Partly cloudy. Highs in the upper 70s. Northeast Winds 5 to 10 Mph.

Tonight 6 Sep Shiawassee

Clear. Patchy fog after midnight. Lows in the lower 50s. Northeast Winds up to 5 Mph in the Evening, becoming light and variable.

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  • Temperature Real-Time

Diamond Lake Temperature Statistics

September Temperature

Owosso, Owosso Community Airport (13 miles)

  • Lowest 3 September, 2026

    66.2 °F

  • Average September

    77.9 °F

  • Highest 2 September, 2026

    91.4 °F

Climate (2021–2026)

Owosso, Owosso Community Airport (13 miles)

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  • Average Low 2021–2026

    41.2 °F

  • Average 2021–2026

    50.4 °F

  • Average High 2021–2026

    59.5 °F
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