Tennant Weather Forecast

    • 29
    • 57

    Decreasing Clouds

    • 31
    • 58

    Mostly Sunny

    • 35
    • 66

    Sunny

    • 40
    • 73

    Sunny

    • 44
    • 78

    Sunny

    • 45
    • 80

    Mostly Sunny

Today 16 May 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 lower 50s to lower 60s. Northwest Winds 10 to 15 Mph with Gusts to around 30 Mph.

Tonight 16 May North Central and Southeast Siskiyou County

Partly cloudy. Lows in the mid 20s to mid 30s. Northwest Winds 10 to 20 Mph with Gusts to around 35 Mph.

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Tennant Temperature Statistics

May Temperature

Mount Shasta (28 miles)

  • Lowest 1 May, 2026

    40.6 °F

  • Average May

    61.9 °F

  • Highest 11 May, 2026

    86.6 °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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