River Heights Weather Forecast

    • 40
    • 60

    Partly Sunny

    • 38
    • 58

    Partly Sunny

    • 41
    • 60

    Partly Sunny

    • 46
    • 57

    Rain Likely

    • 46
    • 60

    Rain

    • 43
    • 55

    Rain

Today 11 Dec Lane County Lowlands

Partly sunny. A slight chance of Showers in the morning. Highs in the lower 60s. Winds light. Chance of rain 20 percent.

Tonight 11 Dec Lane County Lowlands

Partly cloudy in the Evening, then becoming mostly cloudy. Patchy fog. Lows in the lower 40s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

River Heights Temperature Statistics

December Temperature

Eugene, Mahlon Sweet Field (12.4 miles)

  • Lowest 1 December, 2025

    33.1 °F

  • Average December

    47.4 °F

  • Highest 8 December, 2025

    57.9 °F

Climate (2020–Present)

Eugene, Mahlon Sweet Field (12.4 miles)

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  • Average Low 2020–2025

    44.1 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    66 °F
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