Day Lake Weather Forecast

    • 34
    • 51

    Sunny

    • 36
    • 50

    Mostly Sunny

    • 32
    • 47

    Partly Sunny

    • 32
    • 46

    Mostly Cloudy

    • 33
    • 42

    Rain/Snow Likely

    • 31
    • 40

    Snow Likely

    • 33
    • 39

    Snow Likely

Today 18 Jan Foothills and Valleys of the North Cascades

Sunny. Highs in the upper 40s to mid 50s. East wind to 10 Mph becoming northwest in the afternoon.

Tonight 18 Jan Foothills and Valleys of the North Cascades

Clear. Lows in the upper 20s to mid 30s. Light wind becoming northeast to 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Day Lake Temperature Statistics

January Temperature

Arlington Municipal Airport (18.6 miles)

  • Lowest 1 January, 2026

    26.6 °F

  • Average January

    44.4 °F

  • Highest 13 January, 2026

    57.9 °F

Climate (2021–Present)

Arlington Municipal Airport (18.6 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    50.8 °F

  • Average High 2021–2026

    59.8 °F
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