Colchester Weather Forecast

    • 64
    • 90

    Chance Rain Showers

    • 60
    • 81

    Chance Thunderstorms

    • 63
    • 84

    Chance Rain Showers

    • 63
    • 80

    Chance Thunderstorms

    • 61
    • 80

    Chance Thunderstorms

    • 56
    • 79

    Partly Sunny

Today 18 Sep McDonough

Mostly sunny. Hot with Highs around 90. Southeast Winds around 5 Mph.

Tonight 18 Sep McDonough

Partly cloudy in the Evening, then becoming mostly cloudy. A slight chance of Thunderstorms. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Lows in the mid 60s. Southeast Winds around 5 Mph, becoming west after midnight. Chance of rain 40 percent.

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Colchester Temperature Statistics

September Temperature

Macomb Municipal Airport (9.9 miles)

  • Lowest 8 September, 2025

    40.5 °F

  • Average September

    65.2 °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

    42.7 °F

  • Average 2020–2025

    53.1 °F

  • Average High 2020–2025

    63.6 °F
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