Lake Forest Weather Forecast

    • 40
    • 58

    Chance Rain Showers

    • 37
    • 53

    Slight Chance Rain Showers

    • 35
    • 53

    Chance Rain Showers

    • 36
    • 52

    Partly Sunny

    • 43
    • 59

    Chance Rain Showers

    • 43
    • 62

    Chance Rain Showers

Today 29 Apr Summit

Showers likely. Cooler with Highs in the upper 50s. Temperature falling into the lower 50s late. North Winds around 10 Mph. Chance of rain 70 percent.

Tonight 29 Apr Summit

Mostly cloudy. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Lows in the lower 40s. Northwest Winds 5 to 10 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Forest Temperature Statistics

April Temperature

Portage County Airport (11.2 miles)

  • Lowest 8 April, 2026

    20.3 °F

  • Average April

    53.5 °F

  • Highest 4 April, 2026

    79.9 °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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