Chellis Bay Weather Forecast

    • 44
    • 58

    Mostly Cloudy

    • 43
    • 61

    Mostly Sunny

    • 47
    • 66

    Mostly Sunny

    • 48
    • 66

    Partly Sunny

    • 51
    • 66

    Partly Sunny

    • 52
    • 63

    Partly Sunny

Today 21 Sep Eastern Clinton

Partly sunny. Highs in the upper 50s. North Winds 10 to 15 Mph.

Tonight 21 Sep Eastern Clinton

Partly cloudy. Lows in the upper 30s, except in the lower 40s along lake Champlain. North Winds around 10 Mph until Midnight, becoming light and variable.

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Chellis Bay Temperature Statistics

September Temperature

Plattsburgh International Airport (11.8 miles)

  • Lowest 19 September, 2026

    41 °F

  • Average September

    63.6 °F

  • Highest 3 September, 2026

    82 °F

Climate (2021–2026)

Plattsburgh International Airport (11.8 miles)

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  • Average Low 2021–2026

    38.1 °F

  • Average 2021–2026

    47.4 °F

  • Average High 2021–2026

    55.8 °F
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