Diamond Lake Weather Forecast

    • 35
    • 59

    Mostly Sunny

    • 35
    • 57

    Mostly Sunny

    • 32
    • 54

    Sunny

    • 33
    • 61

    Partly Sunny

    • 31
    • 52

    Partly Sunny

    • 30
    • 46

    Partly Sunny

Today 17 Jan South Central Oregon Cascades

Sunny. Highs in the lower 50s to lower 60s. Southeast Winds 5 to 10 Mph shifting to the southwest late in the afternoon.

Tonight 17 Jan South Central Oregon Cascades

Mostly clear. Lows in the lower to mid 30s. South Winds around 5 Mph.

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Diamond Lake Temperature Statistics

January Temperature

Roseburg Regional Airport (60.9 miles)

  • Lowest 9 January, 2026

    30.9 °F

  • Average January

    42.8 °F

  • Highest 3 January, 2026

    55.9 °F

Climate (2021–Present)

Roseburg Regional Airport (60.9 miles)

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  • Average Low 2021–2026

    47 °F

  • Average 2021–2026

    56.9 °F

  • Average High 2021–2026

    67.9 °F
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