Collier Memorial State Park Weather Forecast

    • 37
    • 71

    Increasing Clouds

    • 41
    • 75

    Partly Sunny

    • 40
    • 78

    Mostly Sunny

    • 42
    • 80

    Sunny

    • 41
    • 79

    Mostly Sunny

    • 41
    • 77

    Mostly Sunny

Today 19 May Klamath Basin

Sunny. Highs in the mid 60s to lower 70s. Northwest Winds 5 to 10 Mph.

Tonight 19 May Klamath Basin

Mostly clear in the evening then becoming mostly cloudy. Lows in the mid 30s to lower 40s. Northwest Winds 10 to 15 Mph shifting to the north around 5 Mph well after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Collier Memorial State Park Temperature Statistics

May Temperature

Klamath Falls International Airport (34.8 miles)

  • Lowest 14 May, 2026

    26.7 °F

  • Average May

    54.9 °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

    48.8 °F

  • Average High 2021–2026

    63.5 °F
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