Klamath Falls Weather Forecast

    • 45
    • 72

    Chance Rain

    • 44
    • 69

    Chance Rain

    • 44
    • 75

    Mostly Sunny

    • 46
    • 79

    Mostly Sunny

    • 47
    • 82

    Mostly Sunny

    • 45
    • 81

    Mostly Sunny

Today 16 Sep Klamath Basin

Mostly cloudy with a slight chance of Thunderstorms in the Morning, then partly cloudy with a chance of Showers and slight chance of Thunderstorms in the afternoon. Highs in the mid 60s to lower 70s. Northeast Winds 10 to 15 Mph. Chance of precipitation 30 percent.

Tonight 16 Sep Klamath Basin

Mostly cloudy with a chance of Showers and slight chance of Thunderstorms in the Evening, then partly cloudy with a slight chance of Showers after midnight. Lows in the mid 30s to mid 40s. North Winds 5 to 10 Mph. Chance of precipitation 30 percent.

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Klamath Falls Temperature Statistics

September Temperature

Klamath Falls International Airport (5.6 miles)

  • Lowest 7 September, 2026

    31.6 °F

  • Average September

    54.3 °F

  • Highest 10 September, 2026

    86.6 °F

Climate (2021–2026)

Klamath Falls International Airport (5.6 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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