Tennant Weather Forecast

    • 41
    • 72

    Mostly Sunny

    • 48
    • 79

    Mostly Sunny

    • 52
    • 84

    Mostly Sunny

    • 50
    • 83

    Mostly Sunny

    • 44
    • 77

    Mostly Sunny

    • 42
    • 68

    Mostly Sunny

Today 7 Sep North Central and Southeast Siskiyou County

Sunny. Highs in the mid 60s to mid 70s. East Winds around 5 Mph shifting to the west late in the afternoon.

Tonight 7 Sep North Central and Southeast Siskiyou County

Mostly clear. Lows in the lower 40s to lower 50s. North Winds around 5 Mph shifting to the northeast after midnight.

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Tennant Temperature Statistics

September Temperature

Mount Shasta (28 miles)

  • Lowest 4 September, 2026

    33.1 °F

  • Average September

    51.8 °F

  • Highest 1 September, 2026

    67.6 °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

    65.8 °F
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