Gartside Reservoir Weather Forecast

    • 48
    • 78

    Mostly Sunny

    • 51
    • 87

    Mostly Sunny

    • 41
    • 70

    Slight Chance Thunderstorms

    • 41
    • 65

    Chance Rain Showers

    • 42
    • 63

    Rain Showers Likely

    • 38
    • 62

    Slight Chance Rain Showers

Today 9 Sep Richland

Sunny. Near steady temperature in the upper 70s. West wind around 15 Mph.

Tonight 9 Sep Richland

Mostly clear. Lows in the upper 40s. West wind 5 to 10 Mph, becoming southwest after midnight.

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  • Temperature Real-Time

Gartside Reservoir Temperature Statistics

September Temperature

Sidney-Richland (8.7 miles)

  • Lowest 1 September, 2026

    46 °F

  • Average September

    73.7 °F

  • Highest 4 September, 2026

    95 °F

Climate (2021–2026)

Sidney-Richland (8.7 miles)

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  • Average Low 2021–2026

    32.1 °F

  • Average 2021–2026

    44 °F

  • Average High 2021–2026

    56 °F
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