Three Rivers Weather Forecast

    • 35
    • 73

    Becoming Sunny

    • 38
    • 77

    Mostly Sunny

    • 41
    • 82

    Mostly Sunny

    • 39
    • 81

    Mostly Sunny

    • 36
    • 77

    Partly Sunny

    • 38
    • 77

    Partly Sunny

Today 18 Sep East Slopes of the Oregon Cascades

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

Tonight 18 Sep East Slopes of the Oregon Cascades

Mostly clear. Lows in the upper 30s to mid 40s.

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Three Rivers Temperature Statistics

September Temperature

Bend Airport AWOS (23 miles)

  • Lowest 5 September, 2026

    39.2 °F

  • Average September

    56.9 °F

  • Highest 9 September, 2026

    89.6 °F

Climate (2021–2026)

Bend Airport AWOS (23 miles)

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  • Average Low 2021–2026

    38.5 °F

  • Average 2021–2026

    51.3 °F

  • Average High 2021–2026

    64.6 °F
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