Summit Lake Weather Forecast

    • 43
    • 63

    Sunny

    • 41
    • 64

    Sunny

    • 41
    • 58

    Mostly Sunny

    • 42
    • 61

    Mostly Sunny

    • 45
    • 66

    Mostly Sunny

    • 45
    • 68

    Mostly Sunny

Today 14 Sep Lassen Volcanic National Park

Sunny, warmer. Highs 60 to 70. East Winds up to 15 Mph. Gusts up to 35 Mph decreasing to 20 Mph in the afternoon.

Tonight 14 Sep Lassen Volcanic National Park

Clear. Lows 39 to 47. East Winds up to 10 Mph.

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Summit Lake Temperature Statistics

September Temperature

Redding Municipal Airport (45.4 miles)

  • Lowest 4 September, 2026

    49.6 °F

  • Average September

    71.5 °F

  • Highest 9 September, 2026

    104.6 °F

Climate (2021–2026)

Redding Municipal Airport (45.4 miles)

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  • Average Low 2021–2026

    52.7 °F

  • Average 2021–2026

    65.3 °F

  • Average High 2021–2026

    77.9 °F
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