Tiskilwa Weather Forecast

    • 49
    • 74

    Mostly Cloudy

    • 44
    • 68

    Partly Sunny

    • 50
    • 69

    Rain Showers Likely

    • 52
    • 66

    Rain Showers Likely

    • 55
    • 75

    Mostly Cloudy

    • 59
    • 81

    Slight Chance Rain Showers

Today 19 May Bureau

Mostly cloudy with a 20 percent chance of Showers. Highs in the mid 70s. Temperature falling into the upper 60s this afternoon. West Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 19 May Bureau

Mostly cloudy. Much cooler with Lows in the upper 40s. Northwest Winds 10 to 15 Mph.

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Tiskilwa Temperature Statistics

May Temperature

Illinois Valley Regional Airport (18.6 miles)

  • Lowest 2 May, 2026

    33.8 °F

  • Average May

    59 °F

  • Highest 17 May, 2026

    87.8 °F

Climate (2021–Present)

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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