Willow Valley Reservoir Weather Forecast

    • 48
    • 82

    Sunny

    • 48
    • 83

    Sunny

    • 53
    • 84

    Partly Sunny

    • 49
    • 76

    Mostly Cloudy

    • 46
    • 75

    Partly Sunny

    • 46
    • 76

    Mostly Sunny

Today 16 Sep Northern and Eastern Klamath County and Western Lake County

Sunny. Highs in the mid 70s to lower 80s. East Winds around 5 Mph shifting to the south this afternoon.

Tonight 16 Sep Northern and Eastern Klamath County and Western Lake County

Clear. Lows in the lower 40s to lower 50s. East Winds around 5 Mph.

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Willow Valley Reservoir Temperature Statistics

September Temperature

Klamath Falls International Airport (32.9 miles)

  • Lowest 12 September, 2025

    41 °F

  • Average September

    61.9 °F

  • Highest 2 September, 2025

    89.1 °F

Climate (2020–Present)

Klamath Falls International Airport (32.9 miles)

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  • Average Low 2020–2025

    33.8 °F

  • Average 2020–2025

    48.6 °F

  • Average High 2020–2025

    63.1 °F
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