Graven Reservoir Weather Forecast

    • 35
    • 55

    Becoming Sunny

    • 37
    • 55

    Partly Sunny

    • 41
    • 57

    Chance Rain

    • 38
    • 53

    Rain

    • 33
    • 46

    Chance Rain

    • 36
    • 46

    Chance Rain

    • 32
    • 45

    Rain Likely

Today 13 Dec Modoc County

Sunny. Highs in the lower 50s to lower 60s. Southeast Winds 5 to 10 Mph.

Tonight 13 Dec Modoc County

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

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Graven Reservoir Temperature Statistics

December Temperature

Alturas (14.9 miles)

  • Lowest 1 December, 2025

    15.1 °F

  • Average December

    41 °F

  • Highest 10 December, 2025

    64 °F

Climate (2020–Present)

Alturas (14.9 miles)

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  • Average Low 2020–2025

    33.3 °F

  • Average 2020–2025

    49.3 °F

  • Average High 2020–2025

    64.3 °F
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