Penn Weather Forecast

    • 43
    • 74

    Sunny

    • 49
    • 70

    Mostly Sunny

    • 60
    • 77

    Slight Chance Rain Showers

    • 46
    • 73

    Partly Sunny

    • 50
    • 68

    Partly Sunny

    • 50
    • 67

    Mostly Sunny

Today 10 Oct Johnson

Mostly sunny. Highs in the mid 70s. Northwest Winds 5 to 10 Mph.

Tonight 10 Oct Johnson

Clear, cooler with Lows in the lower 40s. North Winds 5 to 10 Mph.

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Penn Temperature Statistics

October Temperature

Iowa City Municipal Airport (8.1 miles)

  • Lowest 8 October, 2025

    44.1 °F

  • Average October

    67.2 °F

  • Highest 3 October, 2025

    89.1 °F

Climate (2020–Present)

Iowa City Municipal Airport (8.1 miles)

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  • Average Low 2020–2025

    42.4 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    62.8 °F
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