Potsdam Weather Forecast

    • 49
    • 77

    Mostly Sunny

    • 53
    • 80

    Mostly Sunny

    • 56
    • 81

    Partly Sunny

    • 54
    • 82

    Partly Sunny

    • 43
    • 69

    Mostly Sunny

    • 43
    • 66

    Partly Sunny

Today 15 Sep Southwestern St. Lawrence

Patchy dense fog in the morning. Mostly sunny. Highs in the mid 70s. Light and variable Winds.

Tonight 15 Sep Southwestern St. Lawrence

Clear. Patchy dense fog. Lows in the upper 40s. Light and variable Winds.

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Potsdam Temperature Statistics

September Temperature

Massena, Massena International-Richards Field (19.3 miles)

  • Lowest 12 September, 2025

    37.9 °F

  • Average September

    59.9 °F

  • Highest 4 September, 2025

    84 °F

Climate (2020–Present)

Massena, Massena International-Richards Field (19.3 miles)

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  • Average Low 2020–2025

    36.7 °F

  • Average 2020–2025

    46.7 °F

  • Average High 2020–2025

    56.3 °F
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