Mary Island State Park Weather Forecast

    • 11
    • 15

    Slight Chance Snow Showers

    • 6
    • 23

    Chance Snow Showers

    • 9
    • 14

    Partly Sunny

    • 10
    • 24

    Chance Snow Showers

    • 6
    • 16

    Partly Sunny

    • 11
    • 18

    Chance Snow Showers

Today 30 Dec Jefferson

Mostly cloudy with a 50 percent chance of snow Showers. Patchy blowing snow. Very windy and cold with Highs Ranging from 15 to 20 inland to 20 to 25 along the lake Ontario shore. West Winds 30 to 40 Mph.

Tonight 30 Dec Jefferson

Mostly cloudy with a 50 percent chance of snow Showers. Very windy with Lows 10 to 15. West Winds 30 to 40 Mph, Diminishing to 10 to 15 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mary Island State Park Temperature Statistics

December Temperature

Fort Drum / Wheeler-Sack U. S. Army Airfield (23.6 miles)

  • Lowest 5 December, 2025

    -2.6 °F

  • Average December

    22.7 °F

  • Highest 19 December, 2025

    49.8 °F

Climate (2020–Present)

Fort Drum / Wheeler-Sack U. S. Army Airfield (23.6 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    39.5 °F

  • Average 2020–2025

    48 °F

  • Average High 2020–2025

    56.1 °F
Get WillyWeather+ to remove ads