Collier Memorial State Park Weather Forecast

    • 46
    • 82

    Slight Chance Thunderstorms

    • 44
    • 80

    Increasing Clouds

    • 43
    • 82

    Mostly Sunny

    • 45
    • 82

    Partly Sunny

    • 44
    • 83

    Partly Sunny

    • 42
    • 80

    Partly Sunny

    • 42
    • 80

    Partly Sunny

Today 13 Aug Klamath Basin

Sunny. Highs in the mid 70s to mid 80s. South Winds 5 to 10 Mph shifting to the west late this afternoon.

Tonight 13 Aug Klamath Basin

Mostly clear early this evening then becoming partly cloudy. Lows in the mid 40s to mid 50s. Northwest Winds 5 to 10 Mph until well after midnight becoming light.

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Collier Memorial State Park Temperature Statistics

August Temperature

Klamath Falls International Airport (34.8 miles)

  • Lowest 2 August, 2026

    41.6 °F

  • Average August

    70.3 °F

  • Highest 7 August, 2026

    97.6 °F

Climate (2021–2026)

Klamath Falls International Airport (34.8 miles)

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  • Average Low 2021–2026

    33.9 °F

  • Average 2021–2026

    48.6 °F

  • Average High 2021–2026

    63.4 °F
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