Midewin National Tallgrass Prairie Weather Forecast

    • 48
    • 75

    Partly Sunny

    • 52
    • 75

    Mostly Sunny

    • 61
    • 78

    Partly Sunny

    • 67
    • 78

    Rain Showers Likely

    • 57
    • 76

    Rain Showers Likely

    • 50
    • 67

    Slight Chance Rain Showers

    • 52
    • 67

    Partly Sunny

Today 27 Sep Southern Will

Mostly cloudy in the Morning, then becoming partly cloudy. Highs in the mid 60s.

Tonight 27 Sep Southern Will

Partly cloudy. Patchy fog late. Lows in the upper 40s. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Midewin National Tallgrass Prairie Temperature Statistics

September Temperature

Joliet Regional Airport (11.2 miles)

  • Lowest 14 September, 2026

    50 °F

  • Average September

    72.2 °F

  • Highest 2 September, 2026

    95.9 °F

Climate (2021–2026)

Joliet Regional Airport (11.2 miles)

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  • Average Low 2021–2026

    43.7 °F

  • Average 2021–2026

    53.8 °F

  • Average High 2021–2026

    63.3 °F
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