Potsdam Weather Forecast

    • 55
    • 75

    Increasing Clouds

    • 51
    • 72

    Slight Chance Rain Showers

    • 50
    • 72

    Mostly Sunny

    • 55
    • 76

    Partly Sunny

    • 56
    • 73

    Chance Rain Showers

    • 61
    • 76

    Rain Showers Likely

    • 50
    • 72

    Chance Rain Showers

Today 4 Sep Southwestern St. Lawrence

Patchy dense fog this morning. Partly sunny. Highs in the mid 70s. Light and variable Winds, becoming northwest around 10 Mph this afternoon.

Tonight 4 Sep Southwestern St. Lawrence

Partly cloudy. Lows in the mid 50s. Light and variable Winds.

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Potsdam Temperature Statistics

September Temperature

Massena, Massena International-Richards Field (19.3 miles)

  • Lowest 2 September, 2026

    60.1 °F

  • Average September

    69.5 °F

  • Highest 2 September, 2026

    79 °F

Climate (2021–2026)

Massena, Massena International-Richards Field (19.3 miles)

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  • Average Low 2021–2026

    36 °F

  • Average 2021–2026

    46.2 °F

  • Average High 2021–2026

    55.9 °F
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