Rainbow Bay Weather Forecast

    • 43
    • 70

    Increasing Clouds

    • 41
    • 64

    Rain Showers

    • 40
    • 57

    Rain Showers

    • 41
    • 60

    Chance Rain Showers

    • 40
    • 65

    Chance Rain Showers

    • 43
    • 69

    Mostly Sunny

    • 42
    • 68

    Mostly Cloudy

Today 7 Sep Siskiyou Mountains and Southern Oregon Cascades

Partly cloudy with a 10 percent chance of Thunderstorms. Areas of smoke late this morning. Haze through the day. Patchy smoke this afternoon. Highs in the mid 60s to mid 70s. Southwest Winds 5 to 10 Mph shifting to the west late this afternoon.

Tonight 7 Sep Siskiyou Mountains and Southern Oregon Cascades

Mostly cloudy. A 10 percent chance of Showers late this evening and overnight. Lows in the mid 40s to mid 50s. Northwest Winds around 5 Mph shifting to the south after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rainbow Bay Temperature Statistics

September Temperature

Klamath Falls International Airport (29.2 miles)

  • Lowest 1 September, 2025

    44.1 °F

  • Average September

    68.3 °F

  • Highest 2 September, 2025

    89.1 °F

Climate (2020–Present)

Klamath Falls International Airport (29.2 miles)

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  • Average Low 2020–2025

    33.8 °F

  • Average 2020–2025

    48.6 °F

  • Average High 2020–2025

    63.2 °F
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