Swartz Lake Weather Forecast

    • 47
    • 59

    Rain

    • 49
    • 53

    Rain

    • 44
    • 57

    Rain

    • 37
    • 51

    Rain

    • 37
    • 44

    Rain

    • 37
    • 44

    Rain

Today 13 Dec Foothills and Valleys of the North Cascades

Mostly cloudy in the morning then becoming mostly sunny. Patchy fog until late afternoon. Highs in the 50s to lower 60s. Light wind.

Tonight 13 Dec Foothills and Valleys of the North Cascades

Mostly cloudy in the Evening, then a chance of rain after midnight. Mostly cloudy with rain likely in the morning. Rainfall Amounts a tenth to a quarter of an inch possible. Lows in the mid to upper 40s. Southeast wind 10 to 15 Mph. Gusts to 30 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Swartz Lake Temperature Statistics

December Temperature

Arlington Municipal Airport (11.8 miles)

  • Lowest 1 December, 2025

    30 °F

  • Average December

    46 °F

  • Highest 8 December, 2025

    57 °F

Climate (2020–Present)

Arlington Municipal Airport (11.8 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    50.7 °F

  • Average High 2020–2025

    59.8 °F
Get WillyWeather+ to remove ads