Chillicothe Weather Forecast

    • 55
    • 68

    Mostly Cloudy

    • 58
    • 71

    Mostly Cloudy

    • 52
    • 70

    Partly Sunny

    • 56
    • 67

    Mostly Cloudy

    • 56
    • 71

    Mostly Cloudy

    • 59
    • 75

    Partly Sunny

Today 23 Sep Peoria

Cloudy this Morning, then becoming partly sunny. Highs in the upper 60s. Northeast Winds 5 to 10 Mph.

Tonight 23 Sep Peoria

Mostly cloudy. Lows in the mid 50s. Northeast Winds 5 to 10 Mph.

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Chillicothe Temperature Statistics

September Temperature

Marshall County Airport (8.1 miles)

  • Lowest 14 September, 2026

    50.2 °F

  • Average September

    73.8 °F

  • Highest 4 September, 2026

    95.7 °F

Climate (2021–2026)

Marshall County Airport (8.1 miles)

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  • Average Low 2021–2026

    42.4 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    62.3 °F
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