South Mountain Reservoir Weather Forecast

    • 35
    • 62

    Decreasing Clouds

    • 36
    • 66

    Partly Sunny

    • 38
    • 63

    Partly Sunny

    • 32
    • 50

    Rain

    • 31
    • 44

    Rain Likely

    • 28
    • 43

    Rain/Snow

    • 24
    • 40

    Chance Snow

Today 10 Nov Modoc County

Mostly cloudy with a slight chance of snow. Highs in the lower to mid 40s.

Tonight 10 Nov Modoc County

Mostly clear. Lows in the mid 30s to lower 40s. Southeast Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

South Mountain Reservoir Temperature Statistics

November Temperature

Alturas (22.4 miles)

  • Lowest 2 November, 2026

    20.6 °F

  • Average November

    43.9 °F

  • Highest 7 November, 2026

    69.1 °F

Climate (2021–2026)

Alturas (22.4 miles)

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

  • Average Low 2021–2026

    33.2 °F

  • Average 2021–2026

    49.2 °F

  • Average High 2021–2026

    64.9 °F
Get WillyWeather+ to remove ads