John Sam Lake Weather Forecast

    • 52
    • 72

    Becoming Sunny

    • 55
    • 74

    Partly Sunny

    • 53
    • 69

    Mostly Cloudy

    • 52
    • 68

    Chance Rain

    • 52
    • 68

    Slight Chance Thunderstorms

    • 52
    • 71

    Partly Sunny

    • 52
    • 71

    Partly Sunny

Today 8 Sep Downtown Everett / Marysville Area

Mostly sunny. Areas of fog in the morning. Highs in the mid 60s to lower 70s. Light wind becoming northwest to 10 Mph in the afternoon.

Tonight 8 Sep Downtown Everett / Marysville Area

Mostly clear. Lows in the lower to mid 50s. Northwest wind to 10 Mph in the evening becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

John Sam Lake Temperature Statistics

September Temperature

Arlington Municipal Airport (5 miles)

  • Lowest 6 September, 2026

    46.9 °F

  • Average September

    60.5 °F

  • Highest 4 September, 2026

    73 °F

Climate (2021–2026)

Arlington Municipal Airport (5 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