Gateway Lake Weather Forecast

    • 57
    • 82

    Rain Showers

    • 53
    • 70

    Rain Showers Likely

    • 55
    • 78

    Slight Chance Thunderstorms

    • 54
    • 78

    Chance Thunderstorms

    • 52
    • 77

    Slight Chance Thunderstorms

    • 56
    • 79

    Partly Sunny

    • 61
    • 80

    Slight Chance Thunderstorms

Today 20 Jun Dakota

Mostly sunny. Highs in the lower 80s. Southeast Winds 5 to 10 Mph.

Tonight 20 Jun Dakota

A slight chance of Thunderstorms. Showers. Lows in the mid 50s. South Winds 5 to 10 Mph, becoming southeast 10 to 15 Mph with Gusts up to 25 Mph after midnight. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Gateway Lake Temperature Statistics

June Temperature

Sioux City, Sioux Gateway Airport (3.1 miles)

  • Lowest 15 June, 2026

    43.6 °F

  • Average June

    72.5 °F

  • Highest 9 June, 2026

    95.6 °F

Climate (2021–2026)

Sioux City, Sioux Gateway Airport (3.1 miles)

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  • Average Low 2021–2026

    39 °F

  • Average 2021–2026

    51.2 °F

  • Average High 2021–2026

    63.4 °F
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