Lake Merwin Weather Forecast

    • 47
    • 68

    Mostly Sunny

    • 52
    • 69

    Mostly Sunny

    • 46
    • 64

    Partly Sunny

    • 44
    • 64

    Mostly Sunny

    • 46
    • 71

    Mostly Sunny

    • 46
    • 63

    Chance Rain Showers

Today 9 Jun South Washington Cascade Foothills

Mostly sunny. Highs in the mid 70s. West wind 5 to 10 Mph.

Tonight 9 Jun South Washington Cascade Foothills

Partly cloudy. Lows in the mid 40s. Northwest wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Merwin Temperature Statistics

June Temperature

Southwest Washington Regional Airport (22.4 miles)

  • Lowest 5 June, 2024

    46 °F

  • Average June

    59.4 °F

  • Highest 7 June, 2024

    82 °F

Climate (2019–Present)

Southwest Washington Regional Airport (22.4 miles)

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  • Average Low 2019–2024

    45 °F

  • Average 2019–2024

    52.6 °F

  • Average High 2019–2024

    61.9 °F
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