Upper Tumalo Reservoir Weather Forecast

    • 39
    • 59

    Mostly Cloudy

    • 36
    • 57

    Partly Sunny

    • 36
    • 60

    Partly Sunny

    • 38
    • 61

    Partly Sunny

    • 39
    • 55

    Mostly Cloudy

    • 40
    • 56

    Rain Likely

Today 10 Dec East Slopes of the Oregon Cascades

Partly sunny with a 50 percent chance of rain. Highs in the mid 40s to lower 50s, except in the mid to upper 50s Valleys. Breezy. Southwest wind 10 to 20 Mph with Gusts to around 45 Mph. Rainfall Amounts less than a tenth of an inch.

Tonight 10 Dec East Slopes of the Oregon Cascades

Mostly cloudy with a 50 percent chance of rain. Lows in the mid 30s to mid 40s. Southwest wind 5 to 15 Mph with Gusts to around 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Upper Tumalo Reservoir Temperature Statistics

December Temperature

Bend Airport AWOS (11.2 miles)

  • Lowest 1 December, 2025

    19.4 °F

  • Average December

    41.8 °F

  • Highest 7 December, 2025

    57.2 °F

Climate (2020–Present)

Bend Airport AWOS (11.2 miles)

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  • Average Low 2020–2025

    38.4 °F

  • Average 2020–2025

    51.2 °F

  • Average High 2020–2025

    64.4 °F
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