Joliett Weather Forecast

    • 60
    • 80

    Rain Showers Likely

    • 54
    • 75

    Partly Sunny

    • 52
    • 72

    Mostly Sunny

    • 54
    • 73

    Mostly Sunny

    • 56
    • 77

    Partly Sunny

    • 63
    • 78

    Chance Rain Showers

Today 4 Sep Schuylkill

Partly sunny with a slight chance of Showers in the Morning, then mostly cloudy with Showers likely with a chance of Thunderstorms in the afternoon. Humid with Highs in the lower 80s. Northwest Winds around 5 Mph. Chance of rain 70 percent.

Tonight 4 Sep Schuylkill

Mostly cloudy with a slight chance of Showers and Thunderstorms. Near steady temperature in the upper 60s. West Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Joliett Temperature Statistics

September Temperature

Muir Army Air Field / Indiantown (13 miles)

  • Lowest 1 September, 2026

    69.3 °F

  • Average September

    77.7 °F

  • Highest 1 September, 2026

    92.1 °F

Climate (2021–2026)

Muir Army Air Field / Indiantown (13 miles)

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    54.8 °F

  • Average High 2021–2026

    64.1 °F
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