Blachly Mountain Forest State Park Weather Forecast

    • 31
    • 44

    Partly Sunny

    • 31
    • 46

    Mostly Sunny

    • 35
    • 47

    Chance Rain

    • 41
    • 46

    Rain Likely

    • 39
    • 49

    Rain Likely

    • 39
    • 47

    Rain Likely

Today 29 Dec Central Oregon Coast Range

Widespread frost this morning. Mostly sunny. Highs in the upper 40s. Northeast wind 5 to 10 Mph.

Tonight 29 Dec Central Oregon Coast Range

Partly cloudy. Areas of frost in the evening. Widespread frost after midnight. Lows in the mid 30s. Northeast wind 5 to 10 Mph.

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Blachly Mountain Forest State Park Temperature Statistics

December Temperature

Eugene, Mahlon Sweet Field (14.3 miles)

  • Lowest 1 December, 2025

    33.1 °F

  • Average December

    47.1 °F

  • Highest 10 December, 2025

    61 °F

Climate (2020–Present)

Eugene, Mahlon Sweet Field (14.3 miles)

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  • Average Low 2020–2025

    44.2 °F

  • Average 2020–2025

    54.6 °F

  • Average High 2020–2025

    66 °F
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