McCook Lake Weather Forecast

    • 44
    • 65

    Rain Showers Likely

    • 38
    • 64

    Chance Rain Showers

    • 41
    • 70

    Mostly Sunny

    • 44
    • 73

    Mostly Sunny

    • 49
    • 76

    Partly Sunny

    • 51
    • 76

    Chance Rain Showers

    • 50
    • 74

    Slight Chance Rain Showers

Today 1 May Union

Partly sunny with a chance of Sprinkles with a slight chance of Thunderstorms. Highs in the lower 60s. North Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

Tonight 1 May Union

Partly cloudy with isolated Showers and Thunderstorms this Evening, then mostly cloudy with a chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the lower 40s. Northwest Winds 10 to 15 Mph. Chance of rain 50 percent.

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McCook Lake Temperature Statistics

May Temperature

Sioux City, Sioux Gateway Airport (11.2 miles)

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  • Average May

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Climate (2020–Present)

Sioux City, Sioux Gateway Airport (11.2 miles)

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  • Average Low 2020–2025

    38.8 °F

  • Average 2020–2025

    50.6 °F

  • Average High 2020–2025

    62.5 °F
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