Diamond Lake Weather Forecast

    • 55
    • 66

    Chance Rain Showers

    • 55
    • 62

    Rain Showers Likely

    • 55
    • 68

    Chance Rain Showers

    • 54
    • 71

    Chance Rain Showers

    • 53
    • 74

    Slight Chance Thunderstorms

    • 53
    • 73

    Mostly Sunny

    • 50
    • 72

    Mostly Sunny

Today 18 Sep North Cass

Cloudy with a chance of Showers with a slight chance of Thunderstorms. Near steady temperature in the mid 60s. East Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 40 percent.

Tonight 18 Sep North Cass

Cloudy with a chance of Showers with a slight chance of Thunderstorms. Lows in the mid 50s. East Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Diamond Lake Temperature Statistics

September Temperature

Longville, Longville Municipal Airport (11.2 miles)

  • Lowest 7 September, 2025

    35.6 °F

  • Average September

    58.9 °F

  • Highest 16 September, 2025

    82.4 °F

Climate (2020–Present)

Longville, Longville Municipal Airport (11.2 miles)

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  • Average Low 2020–2025

    31.5 °F

  • Average 2020–2025

    41.8 °F

  • Average High 2020–2025

    51.4 °F
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