South Mountain Reservoir Weather Forecast

    • 52
    • 91

    Smoke

    • 54
    • 90

    Smoke

    • 54
    • 89

    Mostly Sunny

    • 51
    • 86

    Mostly Sunny

    • 50
    • 83

    Slight Chance Rain Showers

    • 50
    • 79

    Chance Rain Showers

Today 9 Aug Modoc County

Sunny. Areas of smoke this Morning, then patchy smoke this afternoon. Highs in the lower to mid 90s. North Winds around 5 Mph shifting to the west 10 to 15 Mph this afternoon.

Tonight 9 Aug Modoc County

Clear. Patchy smoke in the evening. Areas of smoke after midnight. Lows in the mid 50s. Northwest Winds 10 to 15 Mph shifting to the north around 5 Mph well after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

South Mountain Reservoir Temperature Statistics

August Temperature

Alturas (22.4 miles)

  • Lowest 4 August, 2026

    43.6 °F

  • Average August

    75.5 °F

  • Highest 7 August, 2026

    100 °F

Climate (2021–2026)

Alturas (22.4 miles)

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

  • Average Low 2021–2026

    33.3 °F

  • Average 2021–2026

    49.3 °F

  • Average High 2021–2026

    64.8 °F
Get WillyWeather+ to remove ads