Blachly Mountain Forest State Park Weather Forecast

    • 52
    • 70

    Increasing Clouds

    • 50
    • 71

    Partly Sunny

    • 52
    • 74

    Partly Sunny

    • 49
    • 72

    Partly Sunny

    • 52
    • 74

    Mostly Sunny

    • 51
    • 78

    Mostly Sunny

Today 29 Sep Central Oregon Coast Range

Patchy fog in the morning. Partly sunny with a 20 percent chance of rain. Highs in the upper 60s. Winds light.

Tonight 29 Sep Central Oregon Coast Range

Mostly cloudy. Patchy fog. Lows in the lower 50s. Light and variable Winds.

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Blachly Mountain Forest State Park Temperature Statistics

September Temperature

Eugene, Mahlon Sweet Field (14.3 miles)

  • Lowest 23 September, 2026

    42.7 °F

  • Average September

    60.8 °F

  • Highest 9 September, 2026

    86.6 °F

Climate (2021–2026)

Eugene, Mahlon Sweet Field (14.3 miles)

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  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    54.4 °F

  • Average High 2021–2026

    65.9 °F
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