West Valley Reservoir Weather Forecast

    • 44
    • 77

    Decreasing Clouds

    • 44
    • 78

    Mostly Sunny

    • 38
    • 76

    Breezy

    • 32
    • 55

    Chance Rain Showers

    • 35
    • 58

    Chance Rain Showers

    • 39
    • 64

    Chance Rain Showers

Today 23 May Modoc County

Sunny until early afternoon then becoming partly cloudy. Slight chance of Thunderstorms late this afternoon. Highs in the mid 70s to lower 80s. Southwest Winds 10 to 15 Mph.

Tonight 23 May Modoc County

Partly cloudy. Slight chance of Thunderstorms in the evening. Lows in the lower 40s to lower 50s. Southwest Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

West Valley Reservoir Temperature Statistics

May Temperature

Alturas (21.1 miles)

  • Lowest 19 May, 2026

    27.6 °F

  • Average May

    56.1 °F

  • Highest 12 May, 2026

    88.6 °F

Climate (2021–Present)

Alturas (21.1 miles)

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  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    49.6 °F

  • Average High 2021–2026

    65 °F
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