Dworshak Dam Weather Forecast

    • 44
    • 70

    Mostly Cloudy

    • 43
    • 68

    Increasing Clouds

    • 38
    • 59

    Rain Showers Likely

    • 37
    • 61

    Chance Rain

    • 40
    • 69

    Partly Sunny

    • 42
    • 71

    Slight Chance Rain

    • 44
    • 74

    Partly Sunny

Today 14 May Orofino/Grangeville Region

Partly cloudy. Highs in the 60s. West Winds to 15 Mph in the afternoon.

Tonight 14 May Orofino/Grangeville Region

Mostly cloudy in the Evening, then partly cloudy with a 20 percent chance of rain after midnight. Lows in the upper 30s to mid 40s. West Winds to 15 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dworshak Dam Temperature Statistics

May Temperature

Lewiston, Lewiston-Nez Perce County Airport (35.4 miles)

  • Lowest 1 May, 2026

    44.7 °F

  • Average May

    65.5 °F

  • Highest 12 May, 2026

    89.1 °F

Climate (2021–Present)

Lewiston, Lewiston-Nez Perce County Airport (35.4 miles)

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  • Average Low 2021–2026

    45.8 °F

  • Average 2021–2026

    55.8 °F

  • Average High 2021–2026

    66.2 °F
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