Lake Forest Weather Forecast

    • 37
    • 52

    Chance Rain

    • 39
    • 61

    Rain

    • 45
    • 59

    Mostly Cloudy

    • 34
    • 69

    Chance Rain

    • 26
    • 43

    Partly Sunny

    • 31
    • 48

    Mostly Cloudy

Today 19 Mar Summit

Mostly cloudy with a 40 percent chance of rain. Not as cool with Highs in the lower 50s. Southwest Winds around 5 Mph, becoming west this afternoon.

Tonight 19 Mar Summit

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 30s. Northeast Winds around 5 Mph, becoming southeast after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Forest Temperature Statistics

March Temperature

Portage County Airport (11.2 miles)

  • Lowest 2 March, 2026

    14.7 °F

  • Average March

    45.8 °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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