Merrill Lake Weather Forecast

    • 49
    • 59

    Rain Showers

    • 50
    • 59

    Rain Showers

    • 50
    • 55

    Rain Showers

    • 49
    • 55

    Rain Showers

    • 48
    • 60

    Chance Rain

    • 46
    • 59

    Slight Chance Rain Showers

Today 29 Sep South Washington Cascades

A chance of rain this Morning, then rain Showers this afternoon. Snow level above 8000 feet. South wind 5 to 10 Mph. Chance of rain near 100 percent. Rainfall Amounts a tenth to a half of an inch.

Tonight 29 Sep South Washington Cascades

Mostly cloudy. Rain Showers likely in the Evening, then a chance of rain after midnight. Snow level 6000 feet. South wind 5 to 10 Mph. Chance of rain 70 percent. Rainfall Amounts a tenth to a quarter of an inch.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Merrill Lake Temperature Statistics

September Temperature

Southwest Washington Regional Airport (26.7 miles)

  • Lowest 26 September, 2025

    44.1 °F

  • Average September

    64.4 °F

  • Highest 16 September, 2025

    91.9 °F

Climate (2020–Present)

Southwest Washington Regional Airport (26.7 miles)

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

  • Average Low 2020–2025

    45 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    62.3 °F
Get WillyWeather+ to remove ads