Tennant Weather Forecast

    • 34
    • 66

    Mostly Sunny

    • 35
    • 75

    Mostly Sunny

    • 34
    • 69

    Mostly Sunny

    • 30
    • 60

    Mostly Sunny

    • 35
    • 64

    Sunny

    • 39
    • 72

    Sunny

Today 13 May North Central and Southeast Siskiyou County

Sunny. Highs in the lower 60s to lower 70s. West Winds 10 to 15 Mph. Gusts up to 30 Mph in the morning.

Tonight 13 May North Central and Southeast Siskiyou County

Mostly clear. Lows in the mid 30s to lower 40s. Northwest Winds 10 to 15 Mph shifting to the north around 5 Mph after midnight.

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Tennant Temperature Statistics

May Temperature

Mount Shasta (28 miles)

  • Lowest 1 May, 2026

    40.6 °F

  • Average May

    61.5 °F

  • Highest 9 May, 2026

    84.7 °F

Climate (2021–Present)

Mount Shasta (28 miles)

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  • Average Low 2021–2026

    39.7 °F

  • Average 2021–2026

    52.7 °F

  • Average High 2021–2026

    66 °F
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