Lake Forest Weather Forecast

    • 15
    • 25

    Mostly Cloudy

    • 19
    • 27

    Mostly Cloudy

    • 15
    • 28

    Slight Chance Snow

    • 30
    • 36

    Slight Chance Rain

    • 34
    • 42

    Chance Rain

    • 30
    • 43

    Slight Chance Rain

Today 2 Jan Summit

Partly sunny in the Morning, then becoming mostly cloudy. Highs in the mid 20s. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 2 Jan Summit

Mostly cloudy with a 20 percent chance of snow Showers. Near steady temperature around 16. Southwest Winds 5 to 10 Mph.

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Lake Forest Temperature Statistics

January Temperature

Portage County Airport (11.2 miles)

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  • Average January

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Climate (2021–Present)

Portage County Airport (11.2 miles)

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  • Average Low 2021–2025

    40.4 °F

  • Average 2021–2025

    49.9 °F

  • Average High 2021–2025

    59.8 °F
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