Upper Tumalo Reservoir Weather Forecast

    • 36
    • 59

    Rain Showers

    • 35
    • 63

    Mostly Sunny

    • 40
    • 67

    Sunny

    • 46
    • 74

    Mostly Sunny

    • 50
    • 79

    Partly Sunny

    • 45
    • 77

    Mostly Sunny

Today 29 May East Slopes of the Oregon Cascades

Rain Showers in the Morning, then rain Showers likely in the afternoon. Highs in the mid 40s to mid 50s, except in the 50s Valleys. Chance of precipitation 90 percent. Rainfall Amounts less than a quarter of an inch.

Tonight 29 May East Slopes of the Oregon Cascades

Mostly cloudy. Lows in the lower to mid 30s. West wind 5 to 15 Mph in the Evening, becoming light. Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

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Upper Tumalo Reservoir Temperature Statistics

May Temperature

Bend Airport AWOS (11.2 miles)

  • Lowest 14 May, 2026

    32 °F

  • Average May

    59.8 °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

    64.8 °F
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