Alder Lake Weather Forecast

    • 36
    • 62

    Mostly Sunny

    • 40
    • 59

    Chance Rain Showers

    • 40
    • 57

    Rain Showers

    • 31
    • 46

    Chance Snow Showers

    • 30
    • 45

    Chance Rain/Snow

    • 30
    • 43

    Chance Rain/Snow

Today 27 Apr Western Ulster

Sunny. Highs in the mid 60s. East Winds around 5 Mph.

Tonight 27 Apr Western Ulster

Mostly clear. Lows in the upper 30s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Alder Lake Temperature Statistics

April Temperature

Monticello, Sullivan County International Airport (24.9 miles)

  • Lowest 8 April, 2026

    18 °F

  • Average April

    49 °F

  • Highest 16 April, 2026

    82.9 °F

Climate (2021–Present)

Monticello, Sullivan County International Airport (24.9 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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