Chesterfield Weather Forecast

    • 59
    • 92

    Sunny

    • 63
    • 92

    Mostly Sunny

    • 63
    • 87

    Chance Thunderstorms

    • 64
    • 86

    Chance Rain Showers

    • 64
    • 86

    Chance Thunderstorms

    • 62
    • 82

    Chance Thunderstorms

Today 17 Sep Macoupin

Sunny. Highs in the lower 90s. Northeast Winds around 5 Mph.

Tonight 17 Sep Macoupin

Mostly clear. Lows in the lower 60s. East Winds around 5 Mph.

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Chesterfield Temperature Statistics

September Temperature

Litchfield Municipal Airport (21.7 miles)

  • Lowest 7 September, 2025

    38.5 °F

  • Average September

    66.9 °F

  • Highest 14 September, 2025

    97.3 °F

Climate (2020–Present)

Litchfield Municipal Airport (21.7 miles)

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  • Average Low 2020–2025

    45 °F

  • Average 2020–2025

    54.2 °F

  • Average High 2020–2025

    63.9 °F
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