Chief Timothy State Park Weather Forecast

    • 43
    • 65

    Partly Sunny

    • 50
    • 69

    Increasing Clouds

    • 47
    • 65

    Rain Showers Likely

    • 50
    • 74

    Slight Chance Rain Showers

    • 49
    • 74

    Mostly Sunny

    • 55
    • 84

    Mostly Sunny

    • 57
    • 87

    Slight Chance Thunderstorms

Today 20 May Lower Garfield and Asotin Counties

Mostly cloudy with a 20 percent chance of rain Showers. Highs in the mid 50s to mid 60s. West wind 5 to 15 Mph with Gusts up to 30 Mph.

Tonight 20 May Lower Garfield and Asotin Counties

Partly cloudy. A chance of rain Showers in the evening. Lows in the upper 30s to lower 40s. Gusts up to 20 Mph in the evening. Chance of precipitation 20 percent.

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Chief Timothy State Park Temperature Statistics

May Temperature

Lewiston, Lewiston-Nez Perce County Airport (8.7 miles)

  • Lowest 6 May, 2025

    40.6 °F

  • Average May

    60.1 °F

  • Highest 2 May, 2025

    86.6 °F

Climate (2020–Present)

Lewiston, Lewiston-Nez Perce County Airport (8.7 miles)

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  • Average Low 2020–2025

    45.3 °F

  • Average 2020–2025

    55.2 °F

  • Average High 2020–2025

    65.5 °F
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