Midewin National Tallgrass Prairie Weather Forecast

    • 70
    • 89

    Partly Sunny

    • 75
    • 95

    Mostly Sunny

    • 72
    • 95

    Chance Thunderstorms

    • 71
    • 90

    Chance Thunderstorms

    • 70
    • 89

    Chance Thunderstorms

    • 71
    • 92

    Mostly Sunny

Today 22 Jul Southern Will

Partly cloudy. Very warm and more humid with Highs in the upper 80s. Southeast Winds around 10 Mph.

Tonight 22 Jul Southern Will

Increasing Clouds. Lows around 70. Southeast Winds 5 to 10 Mph.

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Midewin National Tallgrass Prairie Temperature Statistics

July Temperature

Joliet Regional Airport (11.2 miles)

  • Lowest 18 July, 2025

    59.9 °F

  • Average July

    77.6 °F

  • Highest 5 July, 2025

    94.3 °F

Climate (2020–Present)

Joliet Regional Airport (11.2 miles)

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  • Average Low 2020–2025

    43.4 °F

  • Average 2020–2025

    53.5 °F

  • Average High 2020–2025

    63 °F
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