Mountain Lake Weather Forecast

    • 38
    • 61

    Decreasing Clouds

    • 42
    • 65

    Chance Rain Showers

    • 39
    • 52

    Rain Showers

    • 47
    • 57

    Chance Rain Showers

    • 50
    • 69

    Chance Rain Showers

    • 51
    • 74

    Partly Sunny

Today 21 May Delaware

Mostly cloudy in the Morning, then becoming partly sunny. Highs in the mid 60s. North Winds around 5 Mph.

Tonight 21 May Delaware

Mostly clear. Lows around 40. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mountain Lake Temperature Statistics

May Temperature

Monticello, Sullivan County International Airport (24.9 miles)

  • Lowest 4 May, 2026

    30.9 °F

  • Average May

    53.9 °F

  • Highest 18 May, 2026

    90 °F

Climate (2021–Present)

Monticello, Sullivan County International Airport (24.9 miles)

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  • Average Low 2021–2026

    36.5 °F

  • Average 2021–2026

    45.7 °F

  • Average High 2021–2026

    55 °F
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