Highland Lake Weather Forecast

    • 29
    • 46

    Sunny

    • 32
    • 56

    Sunny

    • 36
    • 63

    Mostly Sunny

    • 36
    • 65

    Mostly Sunny

    • 35
    • 61

    Mostly Sunny

    • 39
    • 62

    Mostly Sunny

    • 38
    • 60

    Mostly Sunny

Today 17 Oct Sullivan

Mostly sunny. Highs around 60.

Tonight 17 Oct Sullivan

Clear. Lows in the upper 20s. Northwest Winds around 5 Mph.

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Highland Lake Temperature Statistics

October Temperature

Monticello, Sullivan County International Airport (12.4 miles)

  • Lowest 7 October, 2026

    30.9 °F

  • Average October

    55.1 °F

  • Highest 2 October, 2026

    79 °F

Climate (2021–2026)

Monticello, Sullivan County International Airport (12.4 miles)

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  • Average Low 2021–2026

    36.4 °F

  • Average 2021–2026

    45.8 °F

  • Average High 2021–2026

    55.1 °F
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