Tennant Weather Forecast

    • 49
    • 83

    Increasing Clouds

    • 48
    • 83

    Partly Sunny

    • 49
    • 86

    Mostly Sunny

    • 49
    • 85

    Mostly Sunny

    • 48
    • 84

    Mostly Sunny

    • 43
    • 79

    Mostly Sunny

    • 43
    • 79

    Mostly Sunny

Today 16 Aug North Central and Southeast Siskiyou County

Sunny until early afternoon then becoming partly cloudy. Highs in the mid 70s to mid 80s. Southeast Winds around 5 Mph shifting to the southwest this afternoon.

Tonight 16 Aug North Central and Southeast Siskiyou County

Mostly cloudy. Lows in the lower 50s to lower 60s. Southwest Winds around 5 Mph until well after midnight becoming light.

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Tennant Temperature Statistics

August Temperature

Mount Shasta (28 miles)

  • Lowest 13 August, 2026

    49.6 °F

  • Average August

    72.9 °F

  • Highest 7 August, 2026

    98.7 °F

Climate (2021–2026)

Mount Shasta (28 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    52.5 °F

  • Average High 2021–2026

    65.8 °F
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