Chatham Weather Forecast

    • 64
    • 78

    Rain Showers

    • 70
    • 83

    Rain Showers

    • 75
    • 91

    Partly Sunny

    • 75
    • 95

    Mostly Sunny

    • 71
    • 92

    Mostly Sunny

    • 69
    • 90

    Mostly Sunny

    • 70
    • 90

    Slight Chance Thunderstorms

Today 24 Jul Sangamon

Cloudy with isolated Showers. Near steady temperature in the mid 70s. South Winds around 5 Mph. Chance of rain 20 percent.

Tonight 24 Jul Sangamon

Cloudy. Isolated Showers in the Evening, then scattered Showers with isolated Thunderstorms after midnight. Lows in the mid 60s. South Winds around 5 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chatham Temperature Statistics

July Temperature

Springfield - Abraham Lincoln Capital Airport (11.2 miles)

  • Lowest 22 July, 2026

    60.1 °F

  • Average July

    78.2 °F

  • Highest 2 July, 2026

    92.6 °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

    55.5 °F

  • Average High 2021–2026

    65.6 °F
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