Harris Lake Weather Forecast

    • 58
    • 66

    Rain Showers

    • 51
    • 69

    Rain Showers

    • 40
    • 62

    Partly Sunny

    • 44
    • 62

    Partly Sunny

    • 42
    • 63

    Mostly Sunny

    • 37
    • 58

    Mostly Sunny

    • 44
    • 61

    Mostly Sunny

Today 30 Sep Northern Berrien

Partly cloudy with a 20 percent chance of Showers. Highs in the mid 60s.

Tonight 30 Sep Northern Berrien

Showers. Lows in the upper 50s. South Winds 5 to 10 Mph. Gusts up to 20 Mph this evening. Chance of rain 80 percent.

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Harris Lake Temperature Statistics

September Temperature

Southwest Michigan Regional Airport (6.8 miles)

  • Lowest 26 September, 2026

    40.6 °F

  • Average September

    67.4 °F

  • Highest 2 September, 2026

    95.6 °F

Climate (2021–2026)

Southwest Michigan Regional Airport (6.8 miles)

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  • Average Low 2021–2026

    43.2 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    60.7 °F
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