Cossayuna Lake Weather Forecast

    • 47
    • 77

    Mostly Cloudy

    • 37
    • 66

    Partly Sunny

    • 46
    • 71

    Chance Rain Showers

    • 44
    • 67

    Rain Showers Likely

    • 48
    • 64

    Chance Rain Showers

    • 51
    • 74

    Chance Rain Showers

    • 53
    • 79

    Slight Chance Rain Showers

Today 20 May Southern Washington

Mostly sunny and not as warm. Near steady temperature in the mid 70s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 20 May Southern Washington

Mostly cloudy. Much cooler with Lows in the upper 40s. West Winds 5 to 10 Mph, becoming north after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cossayuna Lake Temperature Statistics

May Temperature

Glens Falls, Floyd Bennett Memorial Airport (13 miles)

  • Lowest 9 May, 2026

    29.6 °F

  • Average May

    53.2 °F

  • Highest 18 May, 2026

    90 °F

Climate (2021–Present)

Glens Falls, Floyd Bennett Memorial Airport (13 miles)

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  • Average Low 2021–2026

    37.2 °F

  • Average 2021–2026

    47.8 °F

  • Average High 2021–2026

    58.1 °F
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