Deer Hill Reservoir Weather Forecast

    • 51
    • 83

    Increasing Clouds

    • 50
    • 77

    Slight Chance Thunderstorms

    • 47
    • 75

    Mostly Sunny

    • 44
    • 73

    Mostly Sunny

    • 48
    • 81

    Mostly Sunny

    • 49
    • 81

    Chance Rain Showers

Today 18 Sep Modoc County

Mostly cloudy. Highs in the lower to mid 80s. East Winds around 5 Mph shifting to the south late this afternoon.

Tonight 18 Sep Modoc County

Mostly cloudy with a 10 percent chance of Thunderstorms. Lows in the lower to mid 50s. West Winds 5 to 10 Mph.

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Deer Hill Reservoir Temperature Statistics

September Temperature

Alturas (24.2 miles)

  • Lowest 15 September, 2025

    35.1 °F

  • Average September

    66.3 °F

  • Highest 1 September, 2025

    91 °F

Climate (2020–Present)

Alturas (24.2 miles)

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  • Average Low 2020–2025

    33 °F

  • Average 2020–2025

    49.1 °F

  • Average High 2020–2025

    64.4 °F
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