Crater Lake Weather Forecast

    • 55
    • 64

    Chance Thunderstorms

    • 55
    • 71

    Mostly Sunny

    • 55
    • 74

    Mostly Sunny

    • 53
    • 69

    Mostly Sunny

    • 53
    • 70

    Sunny

    • 56
    • 74

    Mostly Sunny

Today 17 Aug Lower Hells Canyon/Salmon River Region

Mostly cloudy. Slight chance of rain Showers in the Morning, then chance of Showers and Thunderstorms in the afternoon. Chance of precipitation 30 percent. Highs 76 to 89.

Tonight 17 Aug Lower Hells Canyon/Salmon River Region

Mostly cloudy in the evening then becoming partly cloudy. A 30 percent chance of Showers and Thunderstorms. Lows in the upper 50s to mid 60s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crater Lake Temperature Statistics

August Temperature

Grangeville - Idaho County Airport (37.3 miles)

  • Lowest 5 August, 2025

    46.4 °F

  • Average August

    67.7 °F

  • Highest 12 August, 2025

    93.2 °F

Climate (2020–Present)

Grangeville - Idaho County Airport (37.3 miles)

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  • Average Low 2020–2025

    36.5 °F

  • Average 2020–2025

    47 °F

  • Average High 2020–2025

    57.6 °F
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