Gartside Reservoir Weather Forecast

    • 39
    • 67

    Decreasing Clouds

    • 45
    • 75

    Increasing Clouds

    • 53
    • 89

    Partly Sunny

    • 61
    • 96

    Mostly Sunny

    • 65
    • 93

    Breezy

    • 60
    • 88

    Chance Rain Showers

    • 58
    • 86

    Chance Rain Showers

Today 22 May Richland

Partly sunny. Highs in the upper 60s. North wind 5 to 10 Mph.

Tonight 22 May Richland

Mostly clear. Lows in the upper 30s. Northeast wind around 5 Mph, becoming west after midnight.

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Gartside Reservoir Temperature Statistics

May Temperature

Sidney-Richland (8.7 miles)

  • Lowest 6 May, 2026

    19.9 °F

  • Average May

    50.4 °F

  • Highest 3 May, 2026

    75.9 °F

Climate (2021–Present)

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

    56.1 °F
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