Allegan Weather Forecast

    • 56
    • 69

    Rain Showers

    • 48
    • 68

    Rain Showers Likely

    • 45
    • 64

    Chance Rain Showers

    • 46
    • 63

    Mostly Cloudy

    • 47
    • 64

    Mostly Cloudy

    • 48
    • 67

    Mostly Cloudy

Today 19 Sep Allegan

Rain Showers and a chance of Thunderstorms. Some Thunderstorms may produce heavy rainfall. Locally heavy rainfall possible in the morning. Highs in the upper 60s. Southeast Winds 5 to 15 Mph with Gusts to around 25 Mph. Chance of rain 100 percent.

Tonight 19 Sep Allegan

Rain Showers and a chance of Thunderstorms. Some Thunderstorms may produce heavy rainfall. Lows in the upper 50s. East Winds 5 to 10 Mph with Gusts to around 20 Mph becoming northeast after midnight. Chance of rain 90 percent.

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Allegan Temperature Statistics

September Temperature

Holland - West Michigan Regional Airport (19.3 miles)

  • Lowest 14 September, 2026

    46.7 °F

  • Average September

    69.6 °F

  • Highest 2 September, 2026

    90.6 °F

Climate (2021–2026)

Holland - West Michigan Regional Airport (19.3 miles)

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  • Average Low 2021–2026

    42.8 °F

  • Average 2021–2026

    51.4 °F

  • Average High 2021–2026

    59.8 °F
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