Saint Johns Lake Weather Forecast

    • 41
    • 71

    Increasing Clouds

    • 45
    • 61

    Rain Showers Likely

    • 45
    • 62

    Chance Rain Showers

    • 41
    • 62

    Mostly Cloudy

    • 41
    • 63

    Mostly Cloudy

    • 44
    • 64

    Mostly Cloudy

Today 17 Sep Baraga

Mostly sunny. Highs 68 to 73. Temperature falling into the lower 60s in the afternoon. Light west Winds, becoming northwest 5 to 10 Mph in the afternoon.

Tonight 17 Sep Baraga

Partly cloudy. Patchy fog. Lows around 41 inland to around 50 at the shore. Light north Winds, becoming northeast after midnight.

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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 14 September, 2026

    35.6 °F

  • Average September

    61.3 °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

    51.1 °F
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