Chatham Weather Forecast

    • 70
    • 88

    Breezy

    • 68
    • 84

    Thunderstorms Likely

    • 54
    • 84

    Rain Showers

    • 48
    • 69

    Mostly Cloudy

    • 51
    • 71

    Mostly Cloudy

    • 56
    • 75

    Mostly Cloudy

Today 17 May Sangamon

Mostly sunny and breezy. Highs in the upper 80s. South Winds 10 to 15 Mph, increasing to 15 to 25 Mph this afternoon.

Tonight 17 May Sangamon

Mostly clear in the Evening, then becoming partly cloudy. Lows around 70. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

Graph Plots Open in Graphs

  • 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

    58.9 °F

  • Highest 12 May, 2026

    83.6 °F

Climate (2021–Present)

Springfield - Abraham Lincoln Capital Airport (11.2 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    45 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    65.6 °F
Get WillyWeather+ to remove ads