Potsdam Weather Forecast

    • 44
    • 68

    Rain Showers

    • 44
    • 62

    Partly Sunny

    • 46
    • 69

    Chance Rain Showers

    • 46
    • 67

    Chance Rain Showers

    • 47
    • 68

    Chance Rain Showers

    • 51
    • 70

    Mostly Sunny

Today 29 May Southwestern St. Lawrence

Mostly cloudy. Showers likely with a slight chance of Thunderstorms this afternoon. Highs in the upper 60s. Southwest Winds 10 to 15 Mph. Gusts up to 25 Mph, increasing to 40 Mph this afternoon. Chance of rain 70 percent.

Tonight 29 May Southwestern St. Lawrence

Mostly cloudy with a 50 percent chance of Showers. Lows in the mid 40s. North Winds 10 to 15 Mph with Gusts up to 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potsdam Temperature Statistics

May Temperature

Massena, Massena International-Richards Field (19.3 miles)

  • Lowest 9 May, 2026

    30.7 °F

  • Average May

    54.8 °F

  • Highest 18 May, 2026

    86.6 °F

Climate (2021–Present)

Massena, Massena International-Richards Field (19.3 miles)

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  • Average Low 2021–2026

    36.1 °F

  • Average 2021–2026

    46.1 °F

  • Average High 2021–2026

    55.8 °F
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