Lake Forest Weather Forecast

    • 33
    • 48

    Increasing Clouds

    • 49
    • 59

    Mostly Cloudy

    • 34
    • 69

    Rain

    • 23
    • 40

    Mostly Sunny

    • 29
    • 47

    Mostly Sunny

    • 39
    • 56

    Mostly Cloudy

Today 24 Mar Summit

Mostly sunny. Not as cool with Highs in the upper 40s. East Winds around 5 Mph, becoming southwest around 5 Mph in the afternoon.

Tonight 24 Mar Summit

Clear, cooler. Near steady temperature in the mid 20s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Forest Temperature Statistics

March Temperature

Portage County Airport (11.2 miles)

  • Lowest 18 March, 2026

    12.7 °F

  • Average March

    44.6 °F

  • Highest 15 March, 2026

    72.9 °F

Climate (2021–Present)

Portage County Airport (11.2 miles)

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  • Average Low 2021–2026

    40.4 °F

  • Average 2021–2026

    49.9 °F

  • Average High 2021–2026

    59.9 °F
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