Riley Lake Weather Forecast

    • 41
    • 65

    Slight Chance Rain Showers

    • 39
    • 67

    Becoming Sunny

    • 44
    • 70

    Mostly Sunny

    • 50
    • 77

    Mostly Sunny

    • 51
    • 81

    Mostly Sunny

    • 46
    • 78

    Mostly Sunny

    • 47
    • 76

    Mostly Sunny

Today 6 Sep Jackson

Partly sunny with a 20 percent chance of Showers. Highs in the mid 60s. West Winds 5 to 15 Mph with Gusts to around 25 Mph.

Tonight 6 Sep Jackson

Partly cloudy in the evening then becoming mostly cloudy. A 20 percent chance of rain Showers. Lows in the lower 40s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Riley Lake Temperature Statistics

September Temperature

Jackson County Airport - Reynolds Field (13.7 miles)

  • Lowest 1 September, 2025

    45 °F

  • Average September

    60.9 °F

  • Highest 2 September, 2025

    79 °F

Climate (2020–Present)

Jackson County Airport - Reynolds Field (13.7 miles)

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  • Average Low 2020–2025

    41 °F

  • Average 2020–2025

    50.4 °F

  • Average High 2020–2025

    60 °F
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