South Wilmington Weather Forecast

    • 69
    • 86

    Severe Tstms

    • 69
    • 86

    Chance Thunderstorms

    • 67
    • 82

    Rain Showers Likely

    • 65
    • 80

    Chance Thunderstorms

    • 71
    • 83

    Chance Thunderstorms

    • 66
    • 85

    Chance Thunderstorms

Today 11 Aug Grundy

Showers and Thunderstorms, mainly in the morning. Some Thunderstorms may be severe late in the morning. Locally heavy rainfall possible late in the morning. Highs in the mid 80s. South Winds 5 to 10 Mph, becoming southwest in the afternoon. Chance of precipitation 80 percent.

Tonight 11 Aug Grundy

Partly cloudy in the Evening, then becoming mostly cloudy. A slight chance of Showers and Thunderstorms late. Humid with Lows around 70. East Winds around 5 Mph. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Wilmington Temperature Statistics

August Temperature

Greater Kankakee Airport (23 miles)

  • Lowest 4 August, 2026

    60.1 °F

  • Average August

    72.1 °F

  • Highest 7 August, 2026

    84.7 °F

Climate (2021–2026)

Greater Kankakee Airport (23 miles)

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  • Average Low 2021–2026

    43 °F

  • Average 2021–2026

    52.8 °F

  • Average High 2021–2026

    62.6 °F
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