North Sioux City Weather Forecast
- 57
- 81
Rain Showers
- 53
- 70
Rain Showers Likely
- 55
- 77
Chance Thunderstorms
- 54
- 77
Chance Thunderstorms
- 52
- 76
Mostly Sunny
- 55
- 78
Chance Rain Showers
- 61
- 80
Chance Rain Showers
Today 20 Jun Union
Mostly sunny. Highs around 80. East Winds 5 to 10 Mph.
Tonight 20 Jun Union
A slight chance of Thunderstorms. Showers. Lows in the upper 50s. Southeast Winds 10 to 15 Mph. Chance of rain 90 percent.
North Sioux City Temperature Statistics
June Temperature
Sioux City, Sioux Gateway Airport (9.9 miles)
Lowest 15 June, 2026
43.6 °FAverage June
72.5 °FHighest 9 June, 2026
95.6 °F
Climate (2021–2026)
Sioux City, Sioux Gateway Airport (9.9 miles)
Average Low 2021–2026
39 °FAverage 2021–2026
51.2 °FAverage High 2021–2026
63.4 °F