Crater Lake Weather Forecast

    • 45
    • 65

    Sunny

    • 46
    • 70

    Sunny

    • 47
    • 72

    Mostly Sunny

    • 46
    • 71

    Mostly Sunny

    • 47
    • 71

    Mostly Sunny

    • 47
    • 70

    Mostly Sunny

Today 29 Sep Lassen-Eastern Plumas-Eastern Sierra Counties

Sunny. Highs 70 to 80. Light Winds becoming northeast around 10 Mph in the afternoon.

Tonight 29 Sep Lassen-Eastern Plumas-Eastern Sierra Counties

Clear. Lows 37 to 47. Northeast Winds around 10 Mph in the evening becoming light.

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Crater Lake Temperature Statistics

September Temperature

Alturas (64 miles)

  • Lowest 14 September, 2026

    28.7 °F

  • Average September

    58.2 °F

  • Highest 24 September, 2026

    86.6 °F

Climate (2021–2026)

Alturas (64 miles)

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  • Average Low 2021–2026

    33.2 °F

  • Average 2021–2026

    49.1 °F

  • Average High 2021–2026

    64.7 °F
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