Souza Lake Weather Forecast

    • 52
    • 83

    Slight Chance Thunderstorms

    • 54
    • 79

    Chance Thunderstorms

    • 48
    • 77

    Slight Chance Thunderstorms

    • 46
    • 75

    Mostly Sunny

    • 48
    • 82

    Mostly Sunny

    • 51
    • 81

    Chance Rain Showers

Today 18 Sep Northeast Siskiyou and Northwest Modoc Counties

Partly cloudy this morning then becoming mostly cloudy. Highs in the lower to mid 80s. West Winds around 5 Mph shifting to the northeast early this Afternoon, then shifting to the east late this afternoon.

Tonight 18 Sep Northeast Siskiyou and Northwest Modoc Counties

Mostly cloudy with a 10 percent chance of Thunderstorms. Lows in the lower to mid 50s. Northwest Winds 5 to 10 Mph shifting to the southwest after midnight.

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Souza Lake Temperature Statistics

September Temperature

Klamath Falls International Airport (20.5 miles)

  • Lowest 15 September, 2025

    37 °F

  • Average September

    61.2 °F

  • Highest 2 September, 2025

    89.1 °F

Climate (2020–Present)

Klamath Falls International Airport (20.5 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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