Mendon Weather Forecast

    • 22
    • 44

    Decreasing Clouds

    • 19
    • 31

    Mostly Sunny

    • 34
    • 41

    Mostly Cloudy

    • 31
    • 48

    Mostly Cloudy

    • 42
    • 49

    Cloudy

    • 41
    • 60

    Mostly Cloudy

Today 20 Dec Mercer

Partly cloudy. Warmer with Highs in the mid 40s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 20 Dec Mercer

Mostly Clear, then becoming partly cloudy. Lows 15 to 20. South Winds 10 to 15 Mph.

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  • Temperature Real-Time

Mendon Temperature Statistics

December Temperature

Lima, Lima Allen County Airport (26.1 miles)

  • Lowest 5 December, 2025

    1 °F

  • Average December

    23.9 °F

  • Highest 17 December, 2025

    42.1 °F

Climate (2020–Present)

Lima, Lima Allen County Airport (26.1 miles)

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  • Average Low 2020–2025

    44.4 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    62.6 °F
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