Lake Forest Weather Forecast

    • 51
    • 59

    Slight Chance Rain

    • 33
    • 71

    Rain

    • 24
    • 40

    Partly Sunny

    • 30
    • 45

    Partly Sunny

    • 43
    • 56

    Mostly Cloudy

    • 50
    • 64

    Chance Rain

Today 25 Mar Summit

Mostly cloudy. Not as cool with Highs in the upper 50s. South Winds 5 to 10 Mph.

Tonight 25 Mar Summit

Mostly cloudy. Not as cool with Lows in the lower 50s. South Winds 5 to 10 Mph with Gusts up to 20 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

    44.5 °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

    40.3 °F

  • Average 2021–2026

    49.8 °F

  • Average High 2021–2026

    59.8 °F
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