Tunnel Reservoir Weather Forecast

    • 48
    • 85

    Sunny

    • 48
    • 86

    Sunny

    • 47
    • 81

    Sunny

    • 47
    • 82

    Mostly Sunny

    • 49
    • 89

    Mostly Sunny

    • 49
    • 90

    Mostly Sunny

Today 14 Sep Shasta Lake Area and Interstate 5 Between 1000-3000 ft

Sunny, warmer. Highs 79 to 89. Northeast Winds up to 15 Mph with Gusts to around 30 Mph.

Tonight 14 Sep Shasta Lake Area and Interstate 5 Between 1000-3000 ft

Clear. Lows 51 to 61. North Winds up to 10 Mph with Gusts to around 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Tunnel Reservoir Temperature Statistics

September Temperature

Mount Shasta (31.1 miles)

  • Lowest 4 September, 2026

    33.7 °F

  • Average September

    58.1 °F

  • Highest 9 September, 2026

    90.6 °F

Climate (2021–2026)

Mount Shasta (31.1 miles)

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  • Average Low 2021–2026

    39.5 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    65.7 °F
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