Walter Lake Weather Forecast

    • 54
    • 89

    Rain Showers Likely

    • 45
    • 77

    Slight Chance Rain Showers

    • 51
    • 78

    Mostly Sunny

    • 58
    • 89

    Mostly Sunny

    • 53
    • 89

    Mostly Sunny

    • 55
    • 87

    Sunny

Today 25 May Upper Columbia Basin

Sunny. Highs in the mid to upper 80s. East wind 5 to 10 Mph. Gusts up to 20 Mph in the afternoon.

Tonight 25 May Upper Columbia Basin

Mostly cloudy with a chance of Thunderstorms. A chance of rain Showers in the Evening, then rain Showers likely overnight. Lows in the mid to upper 50s. Southwest wind 5 to 15 Mph with Gusts up to 30 Mph. Chance of precipitation 70 percent. Rainfall Amounts less than a tenth of an Inch, except higher Amounts possible in Thunderstorms.

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Walter Lake Temperature Statistics

May Temperature

Grant County Airport (30.4 miles)

  • Lowest 5 May, 2025

    34.6 °F

  • Average May

    58.2 °F

  • Highest 2 May, 2025

    82.7 °F

Climate (2020–Present)

Grant County Airport (30.4 miles)

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  • Average Low 2020–2025

    40.9 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    64.1 °F
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