Tennant Weather Forecast

    • 33
    • 63

    Mostly Sunny

    • 39
    • 71

    Sunny

    • 40
    • 77

    Sunny

    • 42
    • 74

    Sunny

    • 45
    • 80

    Sunny

    • 45
    • 81

    Mostly Sunny

Today 13 Sep North Central and Southeast Siskiyou County

Sunny. Areas of frost in the morning. Highs in the mid 50s to mid 60s. West Winds 5 to 10 Mph.

Tonight 13 Sep North Central and Southeast Siskiyou County

Clear. Lows in the mid 30s to lower 40s. North Winds 5 to 10 Mph shifting to the northeast well after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Tennant Temperature Statistics

September Temperature

Mount Shasta (28 miles)

  • Lowest 4 September, 2026

    33.7 °F

  • Average September

    57.1 °F

  • Highest 9 September, 2026

    88 °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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