Saint Helens Lake Weather Forecast

    • 55
    • 77

    Mostly Sunny

    • 48
    • 73

    Mostly Sunny

    • 42
    • 62

    Mostly Sunny

    • 44
    • 60

    Partly Sunny

    • 45
    • 63

    Partly Sunny

    • 47
    • 64

    Partly Sunny

Today 30 Jun South Washington Cascades

Sunny. Free air freezing level 15000 Feet, decreasing to free air freezing level 14000 feet this afternoon. Winds Light, becoming west 5 to 10 Mph this afternoon.

Tonight 30 Jun South Washington Cascades

Mostly clear in the Evening, then becoming partly cloudy. Free air freezing level 15000 feet. North wind 5 to 10 Mph.

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Saint Helens Lake Temperature Statistics

June Temperature

Southwest Washington Regional Airport (36.7 miles)

  • Lowest 2 June, 2025

    43 °F

  • Average June

    60.7 °F

  • Highest 8 June, 2025

    91.9 °F

Climate (2020–Present)

Southwest Washington Regional Airport (36.7 miles)

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  • Average Low 2020–2025

    44.9 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    62.2 °F
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