Yes

you do need a jacket based on the weather in Sioux City, IA 51104, USA 1 second ago

Why? Because rain's coming down!
67°F19°C & Rain

Wind is 3 mph5 km/h from the Southwest, gusting to 11 mph17 km/h
July 16
5am67°F19°C5 mph8 km/h NorthwestRain
6am67°F19°C5 mph8 km/h NorthwestCloudy
7am67°F19°C5 mph9 km/h WestMostly Cloudy
8am67°F20°C6 mph10 km/h NorthwestCloudy
9am68°F20°C9 mph14 km/h NorthwestMostly Cloudy
10am69°F21°C11 mph17 km/h NorthwestMostly Cloudy
11am72°F22°C10 mph16 km/h NorthMostly Cloudy
12pm73°F23°C9 mph15 km/h NorthMostly Cloudy
1pm74°F23°C10 mph16 km/h NorthMostly Cloudy
2pm75°F24°C10 mph17 km/h NorthMostly Cloudy
3pm76°F24°C11 mph18 km/h NorthwestMostly Cloudy
4pm76°F24°C12 mph20 km/h NorthwestMostly Cloudy
DateLowHighWindDayNight
July 1664°F18°C76°F24°C11 mph18 km/h from NorthDrizzleMostly Cloudy
July 1757°F14°C75°F24°C6 mph10 km/h from NortheastPartly CloudyMostly Clear
July 1861°F16°C81°F27°C10 mph16 km/h from SoutheastMostly CloudyThunderstorms
July 1970°F21°C82°F28°C7 mph11 km/h from NortheastThunderstormsThunderstorms
July 2068°F20°C83°F29°C9 mph14 km/h from SoutheastThunderstormsThunderstorms
July 2171°F21°C88°F31°C7 mph11 km/h from SoutheastPartly CloudyMostly Clear
July 2274°F23°C90°F32°C8 mph13 km/h from SoutheastMostly ClearMostly Clear

Yes

Low of 57°F14°C, High of 74°F24°C
Wind: 6 mph10 km/h
Precipitation: None

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