Cottonwood Reservoir Weather Forecast

    • 45
    • 70

    Mostly Sunny

    • 49
    • 77

    Sunny

    • 47
    • 80

    Mostly Sunny

    • 46
    • 70

    Mostly Sunny

    • 40
    • 62

    Slight Chance Rain Showers

    • 39
    • 60

    Mostly Sunny

Today 8 Sep Harney County

Sunny, warmer with Highs 66 to 75. Light Winds.

Tonight 8 Sep Harney County

Mostly clear. Lows 38 to 47. Light Winds.

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Cottonwood Reservoir Temperature Statistics

September Temperature

Burns Municipal Airport (39.8 miles)

  • Lowest 4 September, 2026

    39.7 °F

  • Average September

    53.8 °F

  • Highest 1 September, 2026

    82.7 °F

Climate (2021–2026)

Burns Municipal Airport (39.8 miles)

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  • Average Low 2021–2026

    32 °F

  • Average 2021–2026

    47.5 °F

  • Average High 2021–2026

    62.5 °F
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