Swartz Lake Weather Forecast

    • 45
    • 51

    Rain

    • 43
    • 58

    Rain Likely

    • 42
    • 51

    Rain

    • 41
    • 50

    Rain

    • 43
    • 59

    Mostly Cloudy

    • 41
    • 62

    Partly Sunny

Today 30 Jan Foothills and Valleys of the North Cascades

A slight chance of rain in the Morning, then rain in the late morning and early afternoon. Rain likely late in the afternoon. Rainfall Amounts a half inch to one inch possible. Highs near 50. Southeast wind 10 to 20 Mph. Gusts to 35 Mph.

Tonight 30 Jan Foothills and Valleys of the North Cascades

Mostly cloudy with a chance of rain in the Evening, then mostly cloudy with a slight chance of rain after midnight. Mostly cloudy in the morning. Lows in the 40s. Southeast wind 10 to 15 Mph with Gusts to 25 Mph decreasing to 10 Mph or less after midnight.

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Swartz Lake Temperature Statistics

January Temperature

Arlington Municipal Airport (11.8 miles)

  • Lowest 25 January, 2026

    17.1 °F

  • Average January

    39.8 °F

  • Highest 13 January, 2026

    57.9 °F

Climate (2021–Present)

Arlington Municipal Airport (11.8 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    50.7 °F

  • Average High 2021–2026

    59.8 °F
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