McGlynn Reservoir Weather Forecast

    • 49
    • 67

    Rain Showers Likely

    • 45
    • 70

    Partly Sunny

    • 49
    • 77

    Mostly Sunny

    • 52
    • 83

    Partly Sunny

    • 45
    • 71

    Partly Sunny

    • 46
    • 75

    Mostly Sunny

Today 18 Sep Richland

Showers likely with a slight chance of Thunderstorms. Some Thunderstorms may produce gusty Winds. Highs in the upper 60s. East wind 5 to 10 Mph. Chance of rain 70 percent.

Tonight 18 Sep Richland

Mostly cloudy. A chance of Showers in the evening. Lows in the upper 40s. East wind around 5 Mph. Chance of rain 30 percent.

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McGlynn Reservoir Temperature Statistics

September Temperature

Sidney-Richland (6.2 miles)

  • Lowest 3 September, 2025

    46 °F

  • Average September

    60.9 °F

  • Highest 1 September, 2025

    90 °F

Climate (2020–Present)

Sidney-Richland (6.2 miles)

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  • Average Low 2020–2025

    31.9 °F

  • Average 2020–2025

    44 °F

  • Average High 2020–2025

    56.2 °F
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