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Sioux City, IA Weather Forecast for 5-Days

Updated: Fri Jun 12th 2026 6:30 AM CDT

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Sioux City, IA Weather – 6-12 – Sunny
91° / 56°
Sunny
Daytime highs will reach 91°F with lows dropping to 56°F in Sioux City, where bright and sunny conditions. There's a very small chance of rainfall, only about 2%. Wind will be moderate, blowing around 17mph on average and gusts of 31.4mph at 8 PM. Humidity levels should be comfortable, sitting around 50% on average, the maximum being 70% at 7 AM and 23% being its lowest at 4 PM. Barometric pressure is its highest of 29.95inHg at 7 AM, a lowest point of 29.75inHg at 9 PM with an avg 29.85inHg.
Sioux City, IA Weather – 6-13 – Scattered Showers
74° / 58°

Weather Tomorrow

Scattered Showers
Daytime highs will reach 74°F with lows dropping to 58°F in Sioux City, where on and off showers are set to occur. There's a moderate 36% chance of rainfall with an estimated 0.02in. Wind will be moderate, blowing around 17mph on average and gusts of 21.1mph at 10 PM. Humidity levels should be comfortable, sitting around 57% on average, the maximum being 86% at 6 AM and 37% being its lowest at 5 PM. Barometric pressure is its highest of 30.02inHg at 11 PM, a lowest point of 29.8inHg at 1 AM with an avg 29.92inHg.
Sioux City, IA Weather – 6-14 – Sunny
74° / 52°
Sunny
Sioux City is set for sunshine with temperatures peaking at 74°F and dipping to 52°F. There's a very small chance of rainfall, only about 2%. Wind will be moderate, blowing around 17mph on average and gusts of 22.1mph at 6 AM. Humidity levels should be comfortable, sitting around 50% on average, the maximum being 71% at 2 AM and 28% being its lowest at 3 PM. Barometric pressure is its highest of 30.06inHg at 1 AM, a lowest point of 29.97inHg at 7 PM with an avg 30.02inHg.
Sioux City, IA Weather – 6-15 – Scattered Showers
75° / 50°
Scattered Showers
Daytime highs will reach 75°F with lows dropping to 50°F in Sioux City, where on and off showers are set to occur. There might be light rainfall having a 17% chance with an estimated 0.01in. Winds will be light at 10mph and gusts of 15.5mph at 9 PM. Humidity levels should be comfortable, sitting around 55% on average, the maximum being 83% at 11 PM and 33% being its lowest at 4 PM. Barometric pressure is its highest of 30.08inHg at 7 AM, a lowest point of 29.84inHg at 9 PM with an avg 30inHg.
Sioux City, IA Weather – 6-16 – Sunny
82° / 52°
Sunny
Bright and sunny conditions in Sioux City, with a high of 82°F and a low of 52°F. There might be light rainfall having a 17% chance with an estimated 0in. Winds will be light at 10mph and gusts of 21.7mph at 11 PM. The humidity will be on the higher side, averaging about 62%, the maximum being 85% at 6 AM and 24% being its lowest at 4 PM. Barometric pressure is its highest of 29.98inHg at 1 AM, a lowest point of 29.64inHg at 12 PM with an avg 29.78inHg.
Sioux City, IA Weather – 6-17 – Sunny
96° / 63°
Sunny
In Sioux City, bright and sunny conditions with highs near 96°F and lows around 63°F. There's a very small chance of rainfall, only about 2%. Wind will be moderate, blowing around 19mph on average and gusts of 25.4mph at 1 AM. Humidity levels should be comfortable, sitting around 50% on average, the maximum being 67% at 7 AM and 30% being its lowest at 4 PM. Barometric pressure is its highest of 29.72inHg at 12 AM, a lowest point of 29.38inHg at 5 PM with an avg 29.54inHg.

Currently

Sunny 53°F
29.96 inHg.
Barometer
86%
Humidity
W 12.6 mph
Wind
Sunny

5 Day Forecast Nearby

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