Tennant Weather Forecast

    • 33
    • 76

    Sunny

    • 41
    • 78

    Sunny

    • 43
    • 79

    Mostly Sunny

    • 37
    • 66

    Mostly Sunny

    • 39
    • 65

    Chance Rain

    • 36
    • 65

    Chance Rain

Today 29 Aug North Central and Southeast Siskiyou County

Sunny. Highs in the lower 70s to lower 80s. Southwest Winds 5 to 10 Mph.

Tonight 29 Aug North Central and Southeast Siskiyou County

Mostly clear. Lows in the lower to mid 40s. Northwest Winds 10 to 15 Mph shifting to the northeast around 5 Mph well after midnight.

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Tennant Temperature Statistics

August Temperature

Mount Shasta (28 miles)

  • Lowest 16 August, 2026

    43.6 °F

  • Average August

    71.2 °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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