Chatham Weather Forecast

    • 61
    • 78

    Chance Rain Showers

    • 57
    • 80

    Slight Chance Rain Showers

    • 62
    • 83

    Mostly Cloudy

    • 65
    • 82

    Rain Showers Likely

    • 64
    • 81

    Rain Showers Likely

    • 62
    • 82

    Chance Rain Showers

Today 23 May Sangamon

Partly sunny. Highs in the upper 70s. West Winds around 5 Mph.

Tonight 23 May Sangamon

Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms. Lows in the lower 60s. Southwest Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chatham Temperature Statistics

May Temperature

Springfield - Abraham Lincoln Capital Airport (11.2 miles)

  • Lowest 7 May, 2026

    39.7 °F

  • Average May

    61.6 °F

  • Highest 17 May, 2026

    85.6 °F

Climate (2021–Present)

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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