Fields Spring State Park Weather Forecast

    • 47
    • 70

    Rain Showers

    • 44
    • 55

    Rain Showers Likely

    • 42
    • 62

    Mostly Sunny

    • 45
    • 62

    Mostly Sunny

    • 47
    • 64

    Sunny

    • 50
    • 70

    Mostly Sunny

    • 53
    • 75

    Mostly Sunny

Today 12 Sep Northeast Blue Mountains

Partly cloudy. Highs in the upper 60s to upper 70s.

Tonight 12 Sep Northeast Blue Mountains

Partly cloudy with a chance of rain Showers in the Evening, then rain Showers and a chance of Thunderstorms overnight. Lows in the mid 40s to lower 50s. West wind 5 to 15 Mph with Gusts up to 35 Mph overnight. Chance of precipitation near 100 percent. Rainfall Amounts between a tenth and a quarter of an inch Possible, except higher Amounts possible in Thunderstorms.

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Fields Spring State Park Temperature Statistics

September Temperature

Lewiston, Lewiston-Nez Perce County Airport (21.7 miles)

  • Lowest 5 September, 2026

    49.6 °F

  • Average September

    64.9 °F

  • Highest 10 September, 2026

    88 °F

Climate (2021–2026)

Lewiston, Lewiston-Nez Perce County Airport (21.7 miles)

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  • Average Low 2021–2026

    45.5 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    65.9 °F
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