Tiskilwa Weather Forecast

    • 66
    • 81

    Chance Thunderstorms

    • 60
    • 80

    Slight Chance Thunderstorms

    • 61
    • 81

    Mostly Sunny

    • 65
    • 80

    Chance Thunderstorms

    • 61
    • 79

    Mostly Sunny

    • 61
    • 77

    Partly Sunny

Today 18 Aug Bureau

Mostly cloudy with a chance of Showers and Thunderstorms. Near steady temperature in the upper 70s. Southwest Winds around 10 Mph. Chance of rain 40 percent.

Tonight 18 Aug Bureau

Mostly cloudy with a chance of Showers and Thunderstorms. Humid with Lows in the mid 60s. West Winds 5 to 10 Mph. Chance of rain 40 percent.

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Tiskilwa Temperature Statistics

August Temperature

Illinois Valley Regional Airport (18.6 miles)

  • Lowest 3 August, 2026

    60.8 °F

  • Average August

    74.5 °F

  • Highest 10 August, 2026

    89.6 °F

Climate (2021–2026)

Illinois Valley Regional Airport (18.6 miles)

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  • Average Low 2021–2026

    43.3 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    62.6 °F
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