Lake Forest Weather Forecast

    • 46
    • 65

    Gradual Clearing

    • 44
    • 67

    Mostly Sunny

    • 49
    • 71

    Mostly Sunny

    • 40
    • 61

    Mostly Sunny

    • 41
    • 62

    Mostly Sunny

    • 48
    • 68

    Partly Sunny

Today 2 Oct Summit

Showers late this morning. Much cooler with Highs in the mid 60s. North Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain near 100 percent.

Tonight 2 Oct Summit

Mostly cloudy in the Evening, then clearing. Cooler with Lows in the mid 40s. North Winds 5 to 10 Mph.

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Lake Forest Temperature Statistics

October Temperature

Portage County Airport (11.2 miles)

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  • Average October

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Climate (2021–2026)

Portage County Airport (11.2 miles)

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  • Average Low 2021–2026

    40.5 °F

  • Average 2021–2026

    50 °F

  • Average High 2021–2026

    60 °F
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