Thunder Lake Weather Forecast

    • 31
    • 44

    Rain/Snow

    • 32
    • 37

    Snow

    • 34
    • 40

    Snow

    • 32
    • 41

    Snow

    • 33
    • 40

    Snow

    • 27
    • 40

    Snow Likely

    • 27
    • 40

    Snow Likely

Today 18 Dec Foothills and Valleys of the North Cascades

Breezy. Rain and snow in the late morning and early Afternoon, then rain likely late in the afternoon. No new snow accumulation. Highs in the mid 40s to lower 50s. Southeast wind 15 to 25 Mph with Gusts to 45 Mph.

Tonight 18 Dec Foothills and Valleys of the North Cascades

Breezy. Rain at Times in the Evening, then Rain, snow likely and a slight chance of Thunderstorms after midnight. No snow accumulation. Lows in the 30s. West wind 15 to 25 Mph. Gusts to 45 Mph decreasing to 35 Mph after midnight.

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Thunder Lake Temperature Statistics

December Temperature

Arlington Municipal Airport (60.3 miles)

  • Lowest 1 December, 2025

    30 °F

  • Average December

    47.7 °F

  • Highest 15 December, 2025

    60.1 °F

Climate (2020–Present)

Arlington Municipal Airport (60.3 miles)

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  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    50.7 °F

  • Average High 2020–2025

    59.8 °F
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