Potsdam Weather Forecast

    • 59
    • 73

    Thunderstorms

    • 59
    • 78

    Partly Sunny

    • 61
    • 81

    Partly Sunny

    • 67
    • 84

    Chance Rain Showers

    • 71
    • 85

    Rain Showers Likely

    • 71
    • 88

    Chance Thunderstorms

Today 26 Jun Southwestern St. Lawrence

Mostly cloudy this Morning, then becoming partly sunny. Isolated Thunderstorms. Scattered Showers, mainly this morning. Some Thunderstorms may produce gusty Winds and small hail. Highs in the lower 70s. Light and variable Winds. Chance of rain 50 percent.

Tonight 26 Jun Southwestern St. Lawrence

Partly cloudy until Midnight, then becoming mostly cloudy. Patchy fog after midnight. Lows in the upper 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potsdam Temperature Statistics

June Temperature

Massena, Massena International-Richards Field (19.3 miles)

  • Lowest 1 June, 2026

    39.7 °F

  • Average June

    66.5 °F

  • Highest 12 June, 2026

    87.7 °F

Climate (2021–2026)

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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