Colchester Weather Forecast

    • 60
    • 76

    Thunderstorms Likely

    • 55
    • 65

    Chance Rain Showers

    • 50
    • 63

    Mostly Cloudy

    • 52
    • 65

    Mostly Cloudy

    • 56
    • 69

    Mostly Cloudy

    • 56
    • 73

    Partly Sunny

Today 20 Sep McDonough

Mostly cloudy. Patchy fog in the morning. Occasional Showers and Thunderstorms in the Morning, then a chance of Showers with a slight chance of Thunderstorms in the afternoon. Humid with Highs in the mid 70s. North Winds 5 to 10 Mph. Chance of rain 90 percent.

Tonight 20 Sep McDonough

Cloudy. A chance of Showers after midnight. Humid with Lows around 60. Northeast Winds 10 to 15 Mph. Chance of rain 50 percent.

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Colchester Temperature Statistics

September Temperature

Macomb Municipal Airport (9.9 miles)

  • Lowest 13 September, 2026

    55.6 °F

  • Average September

    74.8 °F

  • Highest 5 September, 2026

    94.6 °F

Climate (2021–2026)

Macomb Municipal Airport (9.9 miles)

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  • Average Low 2021–2026

    43.1 °F

  • Average 2021–2026

    53.8 °F

  • Average High 2021–2026

    64.5 °F
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