Johnson Lake Weather Forecast

    • 46
    • 74

    Becoming Sunny

    • 47
    • 75

    Mostly Sunny

    • 52
    • 80

    Mostly Sunny

    • 52
    • 83

    Mostly Sunny

    • 52
    • 81

    Partly Sunny

    • 44
    • 73

    Partly Sunny

Today 20 May Washington Palouse

Mostly cloudy in the Morning, becoming partly cloudy. Highs in the mid 60s to mid 70s. West wind 5 to 15 Mph.

Tonight 20 May Washington Palouse

Mostly clear. Lows in the lower to mid 40s. North wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Johnson Lake Temperature Statistics

May Temperature

Pullman / Moscow Regional Airport (38.5 miles)

  • Lowest 17 May, 2026

    34.6 °F

  • Average May

    55.7 °F

  • Highest 12 May, 2026

    85.6 °F

Climate (2021–Present)

Pullman / Moscow Regional Airport (38.5 miles)

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  • Average Low 2021–2026

    39.5 °F

  • Average 2021–2026

    49.6 °F

  • Average High 2021–2026

    59.6 °F
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