Willow Valley Reservoir Weather Forecast

    • 39
    • 69

    Mostly Sunny

    • 41
    • 73

    Mostly Sunny

    • 42
    • 76

    Mostly Sunny

    • 46
    • 79

    Mostly Sunny

    • 44
    • 80

    Mostly Sunny

    • 44
    • 79

    Mostly Sunny

Today 19 May Northern and Eastern Klamath County and Western Lake County

Sunny. Highs in the mid 60s to lower 70s. North Winds around 5 Mph shifting to the northwest this afternoon.

Tonight 19 May Northern and Eastern Klamath County and Western Lake County

Partly cloudy. Lows in the lower 30s to lower 40s. Northwest Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Willow Valley Reservoir Temperature Statistics

May Temperature

Klamath Falls International Airport (32.9 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 (32.9 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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