Chatham Weather Forecast

    • 55
    • 83

    Decreasing Clouds

    • 63
    • 85

    Mostly Sunny

    • 70
    • 91

    Mostly Sunny

    • 60
    • 87

    Rain Showers Likely

    • 57
    • 77

    Rain Showers Likely

    • 51
    • 76

    Chance Rain Showers

Today 10 Oct Sangamon

Mostly cloudy. Highs in the lower 80s. Southeast Winds 5 to 10 Mph.

Tonight 10 Oct Sangamon

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the mid 50s. East Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chatham Temperature Statistics

October Temperature

Springfield - Abraham Lincoln Capital Airport (11.2 miles)

  • Lowest 5 October, 2026

    42.7 °F

  • Average October

    63.7 °F

  • Highest 1 October, 2026

    86.6 °F

Climate (2021–2026)

Springfield - Abraham Lincoln Capital Airport (11.2 miles)

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  • Average Low 2021–2026

    45 °F

  • Average 2021–2026

    55.6 °F

  • Average High 2021–2026

    65.7 °F
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