Upper Tumalo Reservoir Weather Forecast

    • 41
    • 79

    Decreasing Clouds

    • 50
    • 80

    Partly Sunny

    • 54
    • 90

    Partly Sunny

    • 48
    • 79

    Chance Rain Showers

    • 43
    • 73

    Slight Chance Rain Showers

    • 39
    • 68

    Partly Sunny

    • 38
    • 64

    Partly Sunny

Today 10 May East Slopes of the Oregon Cascades

Mostly cloudy. Highs in the lower 60s to lower 70s, except in the 70s Valleys.

Tonight 10 May East Slopes of the Oregon Cascades

Partly cloudy. Lows in the mid 30s to lower 40s. Northwest wind 5 to 15 Mph with Gusts to around 30 Mph in the Evening, becoming light.

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Upper Tumalo Reservoir Temperature Statistics

May Temperature

Bend Airport AWOS (11.2 miles)

  • Lowest 1 May, 2026

    41 °F

  • Average May

    64.4 °F

  • Highest 4 May, 2026

    82.4 °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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