Sisters Weather Forecast

    • 38
    • 61

    Rain Showers

    • 39
    • 68

    Mostly Sunny

    • 44
    • 72

    Mostly Sunny

    • 47
    • 82

    Mostly Sunny

    • 45
    • 82

    Mostly Sunny

    • 41
    • 72

    Partly Sunny

    • 40
    • 66

    Partly Sunny

Today 6 Sep East Slopes of the Oregon Cascades

Rain Showers likely and a chance of Thunderstorms. Highs in the 50s, except in the upper 50s to lower 60s Valleys. Chance of precipitation 70 percent. Rainfall Amounts less than a tenth of an Inch, except higher Amounts possible in Thunderstorms.

Tonight 6 Sep East Slopes of the Oregon Cascades

Mostly cloudy. A 40 percent chance of rain Showers in the evening. Lows in the lower 30s to lower 40s. Rainfall Amounts less than a tenth of an inch.

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Sisters Temperature Statistics

September Temperature

Redmond Roberts Field (19.9 miles)

  • Lowest 4 September, 2026

    39.9 °F

  • Average September

    54.2 °F

  • Highest 1 September, 2026

    79.6 °F

Climate (2021–2026)

Redmond Roberts Field (19.9 miles)

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  • Average Low 2021–2026

    35.6 °F

  • Average 2021–2026

    51.1 °F

  • Average High 2021–2026

    65.6 °F
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