Grasse River Weather Forecast

    • 36
    • 57

    Gradual Clearing

    • 36
    • 62

    Mostly Sunny

    • 39
    • 65

    Mostly Sunny

    • 39
    • 65

    Partly Sunny

    • 40
    • 65

    Partly Sunny

    • 42
    • 66

    Partly Sunny

Today 21 Sep Southeastern St. Lawrence

Patchy dense fog in the morning. Mostly cloudy. Highs in the upper 50s. Light and variable Winds.

Tonight 21 Sep Southeastern St. Lawrence

Partly cloudy. Lows in the mid 30s. Light and variable Winds.

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Grasse River Temperature Statistics

September Temperature

Saranac Lake, Adirondack Regional Airport (34.8 miles)

  • Lowest 12 September, 2026

    31.6 °F

  • Average September

    58.1 °F

  • Highest 3 September, 2026

    77.6 °F

Climate (2021–2026)

Saranac Lake, Adirondack Regional Airport (34.8 miles)

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  • Average Low 2021–2026

    30.7 °F

  • Average 2021–2026

    42.5 °F

  • Average High 2021–2026

    53.6 °F
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