Tunnel Reservoir Weather Forecast

    • 37
    • 63

    Decreasing Clouds

    • 38
    • 64

    Mostly Cloudy

    • 36
    • 62

    Mostly Sunny

    • 36
    • 66

    Mostly Sunny

    • 37
    • 68

    Mostly Sunny

    • 38
    • 70

    Sunny

    • 38
    • 70

    Sunny

Today 30 Jan Shasta Lake Area / Northern Shasta County

Mostly cloudy in the morning then clearing. Highs 49 to 63 higher Elevations. 60 to 66 lower Elevations. Light Winds.

Tonight 30 Jan Shasta Lake Area / Northern Shasta County

Mostly cloudy. Lows 34 to 49. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Tunnel Reservoir Temperature Statistics

January Temperature

Mount Shasta (31.1 miles)

  • Lowest 25 January, 2026

    19.7 °F

  • Average January

    39.6 °F

  • Highest 15 January, 2026

    59.6 °F

Climate (2021–Present)

Mount Shasta (31.1 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    52.5 °F

  • Average High 2021–2026

    65.7 °F
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