Olympus Lake Weather Forecast

    • 20
    • 34

    Increasing Clouds

    • 27
    • 40

    Mostly Cloudy

    • 35
    • 48

    Chance Rain/Snow

    • 34
    • 52

    Chance Rain/Snow

    • 27
    • 51

    Chance Rain/Snow

    • 18
    • 38

    Mostly Sunny

Today 18 Mar Sullivan

Partly sunny. Highs in the upper 30s. Northwest Winds around 5 Mph, becoming southwest this afternoon.

Tonight 18 Mar Sullivan

Partly cloudy. Lows in the lower 20s. South Winds around 5 Mph.

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  • Temperature Real-Time

Olympus Lake Temperature Statistics

March Temperature

Monticello, Sullivan County International Airport (11.8 miles)

  • Lowest 2 March, 2026

    9 °F

  • Average March

    37.3 °F

  • Highest 10 March, 2026

    73.9 °F

Climate (2021–Present)

Monticello, Sullivan County International Airport (11.8 miles)

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  • Average Low 2021–2026

    36.5 °F

  • Average 2021–2026

    45.7 °F

  • Average High 2021–2026

    55.1 °F
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