Lake John Weather Forecast

    • 51
    • 54

    Rain Showers

    • 55
    • 79

    Rain Showers

    • 37
    • 68

    Rain Showers Likely

    • 34
    • 56

    Partly Sunny

    • 38
    • 63

    Partly Sunny

    • 42
    • 66

    Mostly Cloudy

Today 17 May Northern Oconto County

Much cooler. Showers and a slight chance of Thunderstorms. Highs in the middle 50s. East wind 10 to 15 Mph. Chance of rain 80 percent.

Tonight 17 May Northern Oconto County

Showers likely and a chance of Thunderstorms. Patchy fog. Lows in the lower 50s. Temperatures rising into the lower 60s after midnight. East wind 5 to 10 Mph shifting to the southeast after midnight. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake John Temperature Statistics

May Temperature

Langlade County Airport (32.3 miles)

  • Lowest 2 May, 2026

    24.3 °F

  • Average May

    45.5 °F

  • Highest 15 May, 2026

    79.2 °F

Climate (2021–Present)

Langlade County Airport (32.3 miles)

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  • Average Low 2021–2026

    33 °F

  • Average 2021–2026

    42.8 °F

  • Average High 2021–2026

    52.1 °F
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