Big Sage Reservoir Weather Forecast

    • 44
    • 81

    Mostly Sunny

    • 47
    • 81

    Mostly Sunny

    • 49
    • 83

    Mostly Sunny

    • 41
    • 71

    Mostly Sunny

Today 10 May Modoc County

Partly cloudy this morning then clearing. Highs in the lower to mid 80s. South Winds around 5 Mph shifting to the southwest 10 to 15 Mph this afternoon.

Tonight 10 May Modoc County

Partly cloudy until well after midnight then clearing. Lows in the mid 40s to lower 50s. West Winds 10 to 15 Mph shifting to the north around 5 Mph after Midnight, then shifting to the northeast well after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Sage Reservoir Temperature Statistics

May Temperature

Alturas (9.3 miles)

  • Lowest 1 May, 2026

    30.7 °F

  • Average May

    57.9 °F

  • Highest 6 May, 2026

    79.6 °F

Climate (2021–Present)

Alturas (9.3 miles)

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

  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    49.6 °F

  • Average High 2021–2026

    64.9 °F
Get WillyWeather+ to remove ads