Alder Lake Weather Forecast

    • 52
    • 62

    Chance Rain Showers

    • 56
    • 71

    Chance Rain Showers

    • 57
    • 73

    Chance Rain Showers

    • 52
    • 74

    Chance Rain Showers

    • 48
    • 68

    Chance Rain Showers

    • 50
    • 72

    Mostly Cloudy

Today 13 Apr Western Ulster

Mostly cloudy. A chance of Showers in the afternoon. Warmer with Highs in the mid 60s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 50 percent.

Tonight 13 Apr Western Ulster

Mostly cloudy. Not as cool with Lows in the mid 50s. West Winds 10 to 15 Mph with Gusts up to 30 Mph, Diminishing to around 5 Mph after midnight.

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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

    43.8 °F

  • Highest 10 April, 2026

    71.1 °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

    45.7 °F

  • Average High 2021–2026

    55 °F
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