Collier Memorial State Park Weather Forecast

    • 27
    • 53

    Mostly Cloudy

    • 28
    • 58

    Mostly Sunny

    • 32
    • 66

    Mostly Sunny

    • 36
    • 72

    Mostly Sunny

    • 40
    • 77

    Mostly Sunny

    • 40
    • 79

    Sunny

Today 16 May Klamath Basin

Partly cloudy. Highs in the lower to mid 50s. Northwest Winds 10 to 20 Mph.

Tonight 16 May Klamath Basin

Mostly cloudy in the evening then clearing. Lows in the mid 20s to lower 30s. Breezy. Northwest Winds 15 to 25 Mph decreasing to 10 to 15 Mph well after midnight.

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Collier Memorial State Park Temperature Statistics

May Temperature

Klamath Falls International Airport (34.8 miles)

  • Lowest 14 May, 2026

    28 °F

  • Average May

    56.9 °F

  • Highest 11 May, 2026

    84.7 °F

Climate (2021–Present)

Klamath Falls International Airport (34.8 miles)

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  • Average Low 2021–2026

    34 °F

  • Average 2021–2026

    48.9 °F

  • Average High 2021–2026

    63.5 °F
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