Castle Lake Weather Forecast

    • 50
    • 67

    Decreasing Clouds

    • 48
    • 70

    Increasing Clouds

    • 49
    • 58

    Chance Rain Showers

    • 46
    • 57

    Chance Rain Showers

    • 46
    • 60

    Slight Chance Rain Showers

    • 49
    • 69

    Mostly Sunny

    • 53
    • 77

    Mostly Sunny

Today 23 Jun South Washington Cascades

Mostly sunny. Free air freezing level 11000 feet. Winds light.

Tonight 23 Jun South Washington Cascades

Partly cloudy. Free air freezing level 11000 Feet, increasing to free air freezing level 12000 feet after midnight. Winds light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Castle Lake Temperature Statistics

June Temperature

Southwest Washington Regional Airport (30.4 miles)

  • Lowest 2 June, 2025

    43 °F

  • Average June

    60.2 °F

  • Highest 8 June, 2025

    91.9 °F

Climate (2020–Present)

Southwest Washington Regional Airport (30.4 miles)

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  • Average Low 2020–2025

    45 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    62.2 °F
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