Lake Twentytwo Weather Forecast

    • 47
    • 63

    Increasing Clouds

    • 46
    • 56

    Mostly Cloudy

    • 45
    • 56

    Slight Chance Rain

    • 44
    • 54

    Rain Likely

    • 41
    • 50

    Rain Likely

    • 42
    • 54

    Mostly Cloudy

    • 44
    • 55

    Chance Rain

Today 21 Sep Cascades of Snohomish and Northern King Counties

Mostly cloudy with a chance of rain and snow. Snow level near 6500 feet. Afternoon pass Temperatures in the lower 50s.

Tonight 21 Sep Cascades of Snohomish and Northern King Counties

Mostly cloudy then becoming partly cloudy late in the evening then becoming mostly cloudy. Freezing level near 12500 feet. Lows in the mid 40s. Light wind becoming west around 10 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Twentytwo Temperature Statistics

September Temperature

Arlington Municipal Airport (19.3 miles)

  • Lowest 16 September, 2026

    44.1 °F

  • Average September

    59.5 °F

  • Highest 9 September, 2026

    78.1 °F

Climate (2021–2026)

Arlington Municipal Airport (19.3 miles)

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

  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.9 °F
Get WillyWeather+ to remove ads