Chatham Weather Forecast

    • 53
    • 71

    Partly Sunny

    • 51
    • 61

    Mostly Cloudy

    • 56
    • 66

    Mostly Cloudy

    • 58
    • 69

    Partly Sunny

    • 57
    • 74

    Slight Chance Thunderstorms

    • 58
    • 73

    Chance Rain Showers

    • 57
    • 71

    Chance Rain Showers

Today 25 Oct Central Cook

Mostly cloudy with a 40 percent chance of Showers. Highs in the upper 60s.

Tonight 25 Oct Central Cook

Partly cloudy in the Evening, then becoming mostly cloudy. Patchy fog late. Lows in the lower 50s. South Winds around 5 Mph, becoming west after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Chatham Temperature Statistics

October Temperature

Chicago, Chicago Midway Airport (7.5 miles)

  • Lowest 17 October, 2026

    41 °F

  • Average October

    61.8 °F

  • Highest 12 October, 2026

    88 °F

Climate (2021–2026)

Chicago, Chicago Midway Airport (7.5 miles)

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

  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    54.3 °F

  • Average High 2021–2026

    61.9 °F
Get WillyWeather+ to remove ads