Gateway Lake Weather Forecast
- 65
- 85
Slight Chance Thunderstorms
- 64
- 84
Chance Thunderstorms
- 64
- 84
Chance Thunderstorms
- 66
- 86
Chance Thunderstorms
- 66
- 87
Chance Thunderstorms
- 57
- 80
Chance Thunderstorms
Today 6 Jul Dakota
Mostly sunny. Highs in the mid 80s. North Winds 5 to 10 Mph.
Tonight 6 Jul Dakota
Partly cloudy in the Evening, then mostly cloudy with a slight chance of Showers and Thunderstorms after midnight. Humid with Lows in the mid 60s. Northeast Winds around 5 Mph. Chance of rain 20 percent.
Gateway Lake Temperature Statistics
July Temperature
Sioux City, Sioux Gateway Airport (3.1 miles)
Lowest 1 July, 2025
59 °FAverage July
78 °FHighest 3 July, 2025
93 °F
Climate (2020–Present)
Sioux City, Sioux Gateway Airport (3.1 miles)
Average Low 2020–2025
38.7 °FAverage 2020–2025
50.6 °FAverage High 2020–2025
62.6 °F