Crater Lake Weather Forecast

    • 37
    • 55

    Sunny

    • 33
    • 53

    Mostly Sunny

    • 33
    • 50

    Mostly Sunny

    • 31
    • 50

    Mostly Sunny

    • 34
    • 47

    Partly Sunny

    • 37
    • 45

    Chance Rain

    • 35
    • 44

    Chance Rain/Snow

Today 10 Dec Lassen-Eastern Plumas-Eastern Sierra Counties

Sunny. Highs 59 to 64. Light Winds.

Tonight 10 Dec Lassen-Eastern Plumas-Eastern Sierra Counties

Clear. Lows 28 to 38. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crater Lake Temperature Statistics

December Temperature

Alturas (64 miles)

  • Lowest 1 December, 2025

    15.1 °F

  • Average December

    37.9 °F

  • Highest 8 December, 2025

    55.9 °F

Climate (2020–Present)

Alturas (64 miles)

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  • Average Low 2020–2025

    33.3 °F

  • Average 2020–2025

    49.2 °F

  • Average High 2020–2025

    64.3 °F
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