Tennant Weather Forecast

    • 39
    • 70

    Sunny

    • 42
    • 75

    Sunny

    • 45
    • 79

    Sunny

    • 46
    • 82

    Partly Sunny

    • 45
    • 78

    Partly Sunny

    • 46
    • 79

    Mostly Sunny

Today 28 Sep North Central and Southeast Siskiyou County

Sunny. Highs in the mid 60s to mid 70s. North Winds 5 to 10 Mph.

Tonight 28 Sep North Central and Southeast Siskiyou County

Clear. Lows in the mid 30s to mid 40s. North Winds 5 to 10 Mph.

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Tennant Temperature Statistics

September Temperature

Mount Shasta (28 miles)

  • Lowest 4 September, 2026

    33.7 °F

  • Average September

    59.5 °F

  • Highest 9 September, 2026

    90.6 °F

Climate (2021–2026)

Mount Shasta (28 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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