French Reservoir Weather Forecast

    • 34
    • 69

    Increasing Clouds

    • 41
    • 73

    Mostly Cloudy

    • 35
    • 69

    Partly Sunny

    • 35
    • 68

    Mostly Sunny

    • 37
    • 73

    Mostly Sunny

    • 40
    • 77

    Mostly Sunny

Today 25 Sep Modoc County

Partly cloudy in the morning then clearing. Highs in the lower to mid 60s. Southwest Winds 10 to 15 Mph shifting to the northwest with Gusts to around 30 Mph in the afternoon.

Tonight 25 Sep Modoc County

Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 30s to lower 40s. North Winds 5 to 10 Mph shifting to the northeast well after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

French Reservoir Temperature Statistics

September Temperature

Alturas (8.1 miles)

  • Lowest 14 September, 2026

    28.7 °F

  • Average September

    59 °F

  • Highest 10 September, 2026

    85.6 °F

Climate (2021–2026)

Alturas (8.1 miles)

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  • Average Low 2021–2026

    33.2 °F

  • Average 2021–2026

    49.1 °F

  • Average High 2021–2026

    64.7 °F
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