Mendon Weather Forecast

    • 69
    • 90

    Chance Thunderstorms

    • 60
    • 84

    Chance Rain Showers

    • 57
    • 80

    Mostly Sunny

    • 60
    • 81

    Partly Sunny

    • 68
    • 84

    Partly Sunny

    • 70
    • 88

    Chance Rain Showers

Today 4 Sep Mercer

Partly cloudy with a chance of Showers with a slight chance of Thunderstorms late this Morning, then mostly sunny this afternoon. Hot with Highs in the lower 90s. West Winds around 5 Mph. Chance of rain 30 percent. Heat index Values up to 102 this afternoon.

Tonight 4 Sep Mercer

Mostly clear early this Evening, then becoming partly cloudy. A chance of Showers and Thunderstorms this Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Unseasonably warm with Lows around 70. West Winds around 5 Mph. Chance of rain 50 percent.

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Mendon Temperature Statistics

September Temperature

Lima, Lima Allen County Airport (26.1 miles)

  • Lowest 2 September, 2026

    73.9 °F

  • Average September

    83.1 °F

  • Highest 2 September, 2026

    91.9 °F

Climate (2021–2026)

Lima, Lima Allen County Airport (26.1 miles)

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  • Average Low 2021–2026

    44.2 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    62.8 °F
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