Alder Lake Weather Forecast

    • 12
    • 28

    Decreasing Clouds

    • 25
    • 37

    Mostly Sunny

    • 18
    • 42

    Chance Snow

    • 3
    • 23

    Slight Chance Snow

    • 4
    • 19

    Slight Chance Snow

    • 20
    • 29

    Chance Snow

    • 25
    • 39

    Mostly Sunny

Today 26 Feb Western Ulster

Mostly sunny. Near steady temperature in the mid 30s. West Winds around 5 Mph.

Tonight 26 Feb Western Ulster

Partly cloudy in the Evening, then clearing. Cold with Lows around 14. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Alder Lake Temperature Statistics

February Temperature

Monticello, Sullivan County International Airport (24.9 miles)

  • Lowest 8 February, 2026

    -7.1 °F

  • Average February

    22.2 °F

  • Highest 17 February, 2026

    45 °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

    45.6 °F

  • Average High 2021–2026

    55 °F
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