Long Lake Weather Forecast

    • 50
    • 72

    Mostly Cloudy

    • 47
    • 70

    Mostly Sunny

    • 50
    • 69

    Partly Sunny

    • 48
    • 70

    Mostly Cloudy

    • 44
    • 58

    Slight Chance Rain

    • 43
    • 62

    Partly Sunny

Today 21 Sep Klamath Basin

Mostly cloudy then becoming partly cloudy late this morning then becoming mostly cloudy. Highs in the mid 70s to lower 80s. Northeast Winds around 5 Mph shifting to the west this afternoon.

Tonight 21 Sep Klamath Basin

Mostly cloudy in the evening then clearing. Lows in the lower 40s to lower 50s. Northwest Winds around 5 Mph.

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Long Lake Temperature Statistics

September Temperature

Klamath Falls International Airport (20.5 miles)

  • Lowest 7 September, 2026

    31.6 °F

  • Average September

    54.8 °F

  • Highest 10 September, 2026

    86.6 °F

Climate (2021–2026)

Klamath Falls International Airport (20.5 miles)

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  • Average Low 2021–2026

    33.9 °F

  • Average 2021–2026

    48.6 °F

  • Average High 2021–2026

    63.3 °F
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