Diamond Lake Weather Forecast

    • 42
    • 52

    Rain

    • 40
    • 47

    Rain

    • 35
    • 45

    Rain/Snow

    • 31
    • 39

    Rain/Snow

    • 35
    • 44

    Rain/Snow

    • 28
    • 42

    Rain/Snow

    • 28
    • 35

    Snow Likely

Today 14 Dec South Central Oregon Cascades

Mostly cloudy early this afternoon then becoming partly cloudy. Highs in the lower 50s to lower 60s. South Winds 10 to 15 Mph.

Tonight 14 Dec South Central Oregon Cascades

Mostly cloudy. Chance of rain after midnight. Rain well after midnight. Lows in the lower to mid 40s. South Winds 15 to 20 Mph. Chance of rain 90 percent.

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Diamond Lake Temperature Statistics

December Temperature

Roseburg Regional Airport (60.9 miles)

  • Lowest 2 December, 2025

    37 °F

  • Average December

    49.5 °F

  • Highest 10 December, 2025

    66 °F

Climate (2020–Present)

Roseburg Regional Airport (60.9 miles)

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  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    56.9 °F

  • Average High 2020–2025

    67.9 °F
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