Colchester Weather Forecast

    • 63
    • 91

    Slight Chance Thunderstorms

    • 60
    • 91

    Mostly Sunny

    • 60
    • 90

    Mostly Sunny

    • 63
    • 91

    Chance Thunderstorms

    • 61
    • 83

    Chance Thunderstorms

    • 60
    • 81

    Chance Rain Showers

Today 15 Sep McDonough

Partly sunny. A slight chance of Showers this afternoon. Hot with Highs in the lower 90s. East Winds around 5 Mph. Chance of rain 20 percent.

Tonight 15 Sep McDonough

Partly cloudy. Lows in the lower 60s. East Winds around 5 Mph.

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Colchester Temperature Statistics

September Temperature

Macomb Municipal Airport (9.9 miles)

  • Lowest 8 September, 2025

    40.5 °F

  • Average September

    63.4 °F

  • Highest 13 September, 2025

    97.5 °F

Climate (2020–Present)

Macomb Municipal Airport (9.9 miles)

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  • Average Low 2020–2025

    42.6 °F

  • Average 2020–2025

    53.1 °F

  • Average High 2020–2025

    63.6 °F
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