Upper Tumalo Reservoir Weather Forecast

    • 61
    • 89

    Increasing Clouds

    • 57
    • 87

    Mostly Cloudy

    • 54
    • 82

    Chance Rain Showers

    • 52
    • 75

    Chance Rain Showers

    • 48
    • 67

    Chance Rain Showers

    • 47
    • 64

    Chance Rain Showers

Today 4 Sep East Slopes of the Oregon Cascades

Partly cloudy. Haze in the morning. A 20 percent chance of Showers and Thunderstorms in the afternoon. Highs in the lower 80s to lower 90s.

Tonight 4 Sep East Slopes of the Oregon Cascades

Mostly cloudy. A chance of Showers and Thunderstorms in the Evening, then a chance of rain Showers overnight. Haze through the night. Lows in the lower 50s to lower 60s. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Upper Tumalo Reservoir Temperature Statistics

September Temperature

Bend Airport AWOS (11.2 miles)

  • Lowest 1 September, 2025

    57.2 °F

  • Average September

    75.4 °F

  • Highest 2 September, 2025

    98.6 °F

Climate (2020–Present)

Bend Airport AWOS (11.2 miles)

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  • Average Low 2020–2025

    38.2 °F

  • Average 2020–2025

    51.1 °F

  • Average High 2020–2025

    64.4 °F
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