Plainfield Weather Forecast

    • 67
    • 75

    Rain Showers Likely

    • 64
    • 77

    Chance Rain Showers

    • 65
    • 77

    Rain Showers Likely

    • 66
    • 83

    Rain Showers Likely

    • 60
    • 73

    Rain Showers Likely

    • 58
    • 71

    Chance Rain Showers

    • 58
    • 70

    Chance Rain Showers

Today 16 Sep Northern Will

Partly cloudy. Highs in the mid 70s.

Tonight 16 Sep Northern Will

Mostly cloudy. Scattered Showers in the evening. Isolated Thunderstorms late in the Evening, then Showers and Thunderstorms after midnight. Locally heavy rainfall possible after midnight. Lows in the upper 60s. Northeast Winds 5 to 10 Mph in the Evening, becoming light and variable. Chance of precipitation 90 percent.

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Plainfield Temperature Statistics

September Temperature

Lewis University Airport (5 miles)

  • Lowest 14 September, 2026

    51.8 °F

  • Average September

    75.2 °F

  • Highest 2 September, 2026

    94.6 °F

Climate (2021–2026)

Lewis University Airport (5 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    52.5 °F

  • Average High 2021–2026

    61.9 °F
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