Treasure Lake Weather Forecast

    • 21
    • 35

    Snow Likely

    • 27
    • 36

    Mostly Cloudy

    • 28
    • 44

    Mostly Cloudy

    • 30
    • 36

    Rain

    • 27
    • 37

    Snow Likely

    • 28
    • 36

    Rain Likely

    • 22
    • 37

    Chance Snow Showers

Today 15 Feb Sullivan

Mostly cloudy. Highs in the upper 30s. East Winds around 5 Mph.

Tonight 15 Feb Sullivan

Mostly cloudy with a 50 percent chance of snow. Lows in the lower 20s. East Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Treasure Lake Temperature Statistics

February Temperature

Monticello, Sullivan County International Airport (12.4 miles)

  • Lowest 8 February, 2026

    -7.1 °F

  • Average February

    16.5 °F

  • Highest 10 February, 2026

    32 °F

Climate (2021–Present)

Monticello, Sullivan County International Airport (12.4 miles)

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  • Average Low 2021–2026

    36.3 °F

  • Average 2021–2026

    45.6 °F

  • Average High 2021–2026

    54.9 °F
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