Graves Reservoir Weather Forecast

    • 29
    • 62

    Sunny

    • 36
    • 69

    Mostly Sunny

    • 35
    • 68

    Partly Sunny

    • 39
    • 66

    Mostly Cloudy

    • 36
    • 62

    Rain

    • 33
    • 51

    Rain/Snow Likely

Today 20 Oct Modoc County

Sunny. Highs in the mid 50s to mid 60s. Northeast Winds 5 to 10 Mph.

Tonight 20 Oct Modoc County

Clear. Lows in the mid 20s to mid 30s. East Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Graves Reservoir Temperature Statistics

October Temperature

Alturas (9.3 miles)

  • Lowest 16 October, 2025

    24.1 °F

  • Average October

    49.4 °F

  • Highest 7 October, 2025

    73 °F

Climate (2020–Present)

Alturas (9.3 miles)

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  • Average Low 2020–2025

    33 °F

  • Average 2020–2025

    49.1 °F

  • Average High 2020–2025

    64.3 °F
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