Johnson Lake Weather Forecast

    • 47
    • 72

    Rain Showers

    • 48
    • 78

    Mostly Sunny

    • 49
    • 84

    Mostly Sunny

    • 42
    • 69

    Chance Rain Showers

    • 39
    • 65

    Chance Rain Showers

    • 40
    • 61

    Chance Rain Showers

Today 8 Sep Eastern Roosevelt

Partly sunny in the Morning, then mostly cloudy with a slight chance of Showers in the afternoon. Very windy with Highs in the lower 70s. West wind 25 to 35 Mph with Gusts up to 50 Mph. Chance of rain 20 percent.

Tonight 8 Sep Eastern Roosevelt

Partly cloudy and breezy. Lows in the lower 50s. Southwest wind 15 to 25 Mph with Gusts up to 35 Mph.

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Johnson Lake Temperature Statistics

September Temperature

Sidney-Richland (47.2 miles)

  • Lowest 1 September, 2026

    46 °F

  • Average September

    73.3 °F

  • Highest 4 September, 2026

    95 °F

Climate (2021–2026)

Sidney-Richland (47.2 miles)

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  • Average Low 2021–2026

    32.1 °F

  • Average 2021–2026

    43.9 °F

  • Average High 2021–2026

    56 °F
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