Cook Middle Reservoir Weather Forecast

    • 53
    • 76

    Mostly Cloudy

    • 50
    • 72

    Slight Chance Rain Showers

    • 53
    • 75

    Partly Sunny

    • 53
    • 83

    Partly Sunny

    • 55
    • 81

    Partly Sunny

Today 23 Sep Box Butte

Areas of fog this morning. Mostly cloudy with a slight chance of Showers. Isolated Thunderstorms this afternoon. Highs in the mid 70s. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

Tonight 23 Sep Box Butte

Mostly cloudy. Lows in the lower 50s. South Winds 10 to 15 Mph, becoming southeast around 5 Mph after midnight.

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Cook Middle Reservoir Temperature Statistics

September Temperature

Scottsbluff, Heilig Field (21.7 miles)

  • Lowest 10 September, 2026

    44.7 °F

  • Average September

    70.3 °F

  • Highest 5 September, 2026

    98.7 °F

Climate (2021–2026)

Scottsbluff, Heilig Field (21.7 miles)

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  • Average Low 2021–2026

    37 °F

  • Average 2021–2026

    51.5 °F

  • Average High 2021–2026

    67.2 °F
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