South Lebanon Weather Forecast

    • 58
    • 87

    Chance Thunderstorms

    • 56
    • 81

    Chance Rain Showers

    • 57
    • 80

    Chance Rain Showers

    • 57
    • 72

    Rain Showers

    • 56
    • 74

    Rain Showers Likely

    • 55
    • 72

    Rain Showers Likely

Today 5 Sep Linn County Lowlands

Mostly sunny. A slight chance of Thunderstorms this Morning, then a chance of Thunderstorms this afternoon. Highs in the upper 80s. Winds light. Chance of precipitation 40 percent. Rainfall Amounts less than a tenth of an inch.

Tonight 5 Sep Linn County Lowlands

Mostly cloudy. A chance of Thunderstorms in the Evening, then a slight chance of Showers after midnight. Lows in the upper 50s. Winds light. Chance of rain 40 percent. Rainfall Amounts less than a tenth of an Inch, except higher Amounts possible in Thunderstorms.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Lebanon Temperature Statistics

September Temperature

Corvallis, Corvallis Municipal Airport (18.6 miles)

  • Lowest 2 September, 2025

    54 °F

  • Average September

    69.5 °F

  • Highest 2 September, 2025

    90 °F

Climate (2020–Present)

Corvallis, Corvallis Municipal Airport (18.6 miles)

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  • Average Low 2020–2025

    43.4 °F

  • Average 2020–2025

    53 °F

  • Average High 2020–2025

    63.9 °F
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