Summit Lake Weather Forecast

    • 34
    • 46

    Rain Showers

    • 38
    • 58

    Mostly Sunny

    • 41
    • 70

    Mostly Sunny

    • 46
    • 76

    Mostly Sunny

    • 42
    • 70

    Mostly Sunny

    • 37
    • 61

    Partly Sunny

    • 37
    • 56

    Partly Sunny

Today 6 Sep South Central Oregon Cascades

Rain Showers and chance of Thunderstorms early this Afternoon, then rain Showers likely and slight chance of Thunderstorms late this afternoon. Highs in the mid 40s to mid 50s. West Winds around 5 Mph. Chance of precipitation 80 percent.

Tonight 6 Sep South Central Oregon Cascades

Mostly cloudy with a 30 percent chance of rain Showers early this Evening, then partly cloudy late this evening and overnight. Patchy fog through the night. Lows in the mid 30s to lower 40s. Northwest Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Summit Lake Temperature Statistics

September Temperature

Bend Airport AWOS (63.4 miles)

  • Lowest 4 September, 2026

    41 °F

  • Average September

    55.1 °F

  • Highest 1 September, 2026

    77 °F

Climate (2021–2026)

Bend Airport AWOS (63.4 miles)

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  • Average Low 2021–2026

    38.6 °F

  • Average 2021–2026

    51.4 °F

  • Average High 2021–2026

    64.6 °F
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