Tennant Weather Forecast

    • 44
    • 78

    Increasing Clouds

    • 48
    • 80

    Partly Sunny

    • 47
    • 81

    Mostly Sunny

    • 45
    • 81

    Mostly Sunny

    • 44
    • 80

    Mostly Sunny

    • 44
    • 79

    Partly Sunny

Today 19 Sep North Central and Southeast Siskiyou County

Sunny. Highs in the lower 70s to lower 80s. Northeast Winds around 5 Mph.

Tonight 19 Sep North Central and Southeast Siskiyou County

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 40s to lower 50s. Northeast Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Tennant Temperature Statistics

September Temperature

Mount Shasta (28 miles)

  • Lowest 4 September, 2026

    33.7 °F

  • Average September

    58 °F

  • Highest 9 September, 2026

    90.6 °F

Climate (2021–2026)

Mount Shasta (28 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    39.5 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    65.7 °F
Get WillyWeather+ to remove ads