Tiskilwa Weather Forecast

    • 58
    • 88

    Mostly Sunny

    • 61
    • 90

    Partly Sunny

    • 62
    • 89

    Chance Thunderstorms

    • 63
    • 88

    Chance Rain Showers

    • 62
    • 86

    Chance Thunderstorms

    • 62
    • 86

    Chance Rain Showers

Today 17 Sep Bureau

Sunny. Highs in the upper 80s. East Winds around 5 Mph.

Tonight 17 Sep Bureau

Mostly clear. Lows in the upper 50s. East Winds around 5 Mph.

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Tiskilwa Temperature Statistics

September Temperature

Illinois Valley Regional Airport (18.6 miles)

  • Lowest 7 September, 2025

    39.6 °F

  • Average September

    64.7 °F

  • Highest 14 September, 2025

    91.6 °F

Climate (2020–Present)

Illinois Valley Regional Airport (18.6 miles)

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  • Average Low 2020–2025

    43.1 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    62 °F
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