Windsor Weather Forecast

    • 61
    • 90

    Sunny

    • 59
    • 90

    Mostly Sunny

    • 61
    • 91

    Mostly Sunny

    • 63
    • 93

    Partly Sunny

    • 61
    • 87

    Chance Rain Showers

    • 61
    • 85

    Chance Rain Showers

    • 61
    • 82

    Slight Chance Rain Showers

Today 15 Sep Shelby

Sunny. Near steady temperature around 90. East Winds around 5 Mph.

Tonight 15 Sep Shelby

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

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Windsor Temperature Statistics

September Temperature

Mattoon / Charleston, Coles County Memorial Airport (16.8 miles)

  • Lowest 7 September, 2025

    45 °F

  • Average September

    66.7 °F

  • Highest 13 September, 2025

    91.9 °F

Climate (2020–Present)

Mattoon / Charleston, Coles County Memorial Airport (16.8 miles)

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  • Average Low 2020–2025

    45.7 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    64.5 °F
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