Diamond Lake Weather Forecast

    • 50
    • 76

    Sunny

    • 50
    • 75

    Sunny

    • 52
    • 75

    Partly Sunny

    • 49
    • 71

    Partly Sunny

    • 46
    • 67

    Partly Sunny

    • 45
    • 64

    Mostly Sunny

Today 16 Sep South Central Oregon Cascades

Sunny. Highs in the lower 70s to lower 80s. East Winds 5 to 10 Mph shifting to the south late in the afternoon.

Tonight 16 Sep South Central Oregon Cascades

Clear. Lows in the mid 40s to mid 50s. Southwest Winds around 5 Mph shifting to the north in the late evening and early Morning, then shifting to the east well after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Diamond Lake Temperature Statistics

September Temperature

Roseburg Regional Airport (60.9 miles)

  • Lowest 13 September, 2025

    54 °F

  • Average September

    69.5 °F

  • Highest 4 September, 2025

    95 °F

Climate (2020–Present)

Roseburg Regional Airport (60.9 miles)

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  • Average Low 2020–2025

    46.9 °F

  • Average 2020–2025

    56.8 °F

  • Average High 2020–2025

    67.9 °F
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