Tennant Weather Forecast

    • 26
    • 52

    Mostly Sunny

    • 18
    • 46

    Mostly Sunny

    • 17
    • 43

    Mostly Sunny

    • 23
    • 48

    Partly Sunny

    • 26
    • 47

    Partly Sunny

    • 30
    • 49

    Mostly Cloudy

Today 22 Jan North Central and Southeast Siskiyou County

Partly cloudy then becoming sunny in the late morning and early afternoon then becoming partly cloudy. Highs in the mid 40s to mid 50s. North Winds around 5 Mph.

Tonight 22 Jan North Central and Southeast Siskiyou County

Partly cloudy in the evening then clearing. Lows in the mid 20s to lower 30s. Northwest Winds 5 to 10 Mph.

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Tennant Temperature Statistics

January Temperature

Mount Shasta (28 miles)

  • Lowest 9 January, 2026

    21 °F

  • Average January

    37.4 °F

  • Highest 15 January, 2026

    57.9 °F

Climate (2021–Present)

Mount Shasta (28 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    65.6 °F
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