Tiskilwa Weather Forecast

    • 50
    • 73

    Decreasing Clouds

    • 52
    • 75

    Mostly Sunny

    • 62
    • 77

    Rain Showers Likely

    • 64
    • 75

    Rain Showers Likely

    • 58
    • 74

    Rain Showers Likely

    • 55
    • 68

    Chance Rain Showers

Today 27 Sep Bureau

Mostly sunny. Highs in the lower 70s. East Winds around 5 Mph.

Tonight 27 Sep Bureau

Partly cloudy in the Evening, then clearing. Lows around 50. Northeast Winds around 5 Mph.

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Tiskilwa Temperature Statistics

September Temperature

Illinois Valley Regional Airport (18.6 miles)

  • Lowest 14 September, 2026

    50 °F

  • Average September

    71.5 °F

  • Highest 1 September, 2026

    93.2 °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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