Upper Tumalo Reservoir Weather Forecast

    • 41
    • 70

    Increasing Clouds

    • 44
    • 72

    Partly Sunny

    • 46
    • 75

    Mostly Sunny

    • 48
    • 80

    Mostly Sunny

    • 47
    • 82

    Mostly Sunny

    • 46
    • 81

    Partly Sunny

    • 37
    • 67

    Partly Sunny

Today 19 May East Slopes of the Oregon Cascades

Sunny. Highs in the mid 50s to mid 60s, except in the mid 60s to lower 70s Valleys.

Tonight 19 May East Slopes of the Oregon Cascades

Mostly cloudy. Lows in the mid 30s to lower 40s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Upper Tumalo Reservoir Temperature Statistics

May Temperature

Bend Airport AWOS (11.2 miles)

  • Lowest 14 May, 2026

    32 °F

  • Average May

    59.9 °F

  • Highest 12 May, 2026

    89.6 °F

Climate (2021–Present)

Bend Airport AWOS (11.2 miles)

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  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    51.5 °F

  • Average High 2021–2026

    64.7 °F
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