Diamond Lake Weather Forecast

    • 62
    • 85

    Decreasing Clouds

    • 48
    • 78

    Chance Thunderstorms

    • 59
    • 74

    Chance Rain Showers

    • 62
    • 84

    Rain Showers

    • 63
    • 80

    Rain Showers Likely

    • 57
    • 79

    Slight Chance Thunderstorms

Today 12 Sep Cass

Mostly sunny. Highs in the mid 80s. Southwest Winds 5 to 10 Mph. Gusts up to 20 Mph.

Tonight 12 Sep Cass

Partly cloudy in the Evening, then becoming mostly clear. Lows in the lower 60s. Northwest Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Diamond Lake Temperature Statistics

September Temperature

Elkhart Municipal (12.4 miles)

  • Lowest 7 September, 2026

    57.2 °F

  • Average September

    75.4 °F

  • Highest 3 September, 2026

    95.4 °F

Climate (2021–2026)

Elkhart Municipal (12.4 miles)

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  • Average Low 2021–2026

    42.7 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    60 °F
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