Saint Johns Lake Weather Forecast

    • 41
    • 65

    Increasing Clouds

    • 43
    • 69

    Mostly Sunny

    • 42
    • 69

    Partly Sunny

    • 45
    • 65

    Mostly Cloudy

    • 47
    • 69

    Mostly Cloudy

    • 47
    • 67

    Rain Showers Likely

Today 24 Sep Baraga

Patchy fog in the morning. Partly cloudy. Highs in the upper 60s. Light south Winds.

Tonight 24 Sep Baraga

Patchy fog. Cloudy in the Evening, then becoming partly cloudy. Lows 40 to 45 inland to around 51 at the shore. Light south Winds. Gusts up to 20 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Saint Johns Lake Temperature Statistics

September Temperature

Marquette, Sawyer International Airport (34.8 miles)

  • Lowest 19 September, 2026

    32 °F

  • Average September

    58.2 °F

  • Highest 1 September, 2026

    89.6 °F

Climate (2021–2026)

Marquette, Sawyer International Airport (34.8 miles)

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  • Average Low 2021–2026

    33.1 °F

  • Average 2021–2026

    40.9 °F

  • Average High 2021–2026

    51 °F
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