Lake Forest Weather Forecast

    • 61
    • 68

    Rain Showers Likely

    • 45
    • 76

    Rain Showers

    • 44
    • 54

    Rain Showers

    • 62
    • 78

    Rain Likely

    • 55
    • 74

    Rain Likely

    • 47
    • 75

    Rain Likely

Today 30 Mar Summit

Mostly cloudy. A slight chance of Showers this Morning, then a chance of Showers with a slight chance of Thunderstorms this afternoon. Warmer with Highs around 70. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 30 percent.

Tonight 30 Mar Summit

Mostly cloudy with a chance of Thunderstorms. Showers Likely, mainly in the evening. Not as cool with Lows around 60. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 70 percent.

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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

    43.7 °F

  • Highest 26 March, 2026

    74.5 °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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