- Book car hire with Alamo & get Viator discount code
- Save 10% on US attractions & excursions with Viator
- Offer available to UK residents only
Sioux City weather in September 2020
- 2424°C max day temperature
- 99 days with some rainfall
- 1111°C min night temperature
- 1212 hours of daylight per day
- 0No heat & humidity
- 7373 mm of monthly rainfall
- 66 (High) UV index
The September weather guide for Sioux City, Iowa shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
How hot is it in Sioux City in September?
Daytime temperatures usually reach 24°C in Sioux City in September, falling to 11°C at night.
How sunny is it in Sioux City in September?
There are normally 8 hours of bright sunshine each day in Sioux City in September - that's 63% of daylight hours.
Does it rain in Sioux City in September?
There are usually 9 days with some rain in Sioux City in September and the average monthly rainfall is 73mm.
Sioux City sunrise & sunset times for September 2020
Browse the sunrise & sunset times for Sioux City in September 2020. Select a month to view Sioux City sunrise & sunset times for the next twelve months.
|Date||Sunrise times||Sunset times|
|Tuesday, 1st September 2020||06:51||19:59|
|Tuesday, 15th September 2020||07:06||19:34|
|Wednesday, 30th September 2020||07:22||19:08|
- Save 20% on hotels with Booking.com breakaway deals
- Book hotels in Dubai, Bangkok, Paris & more
- Travel between 1st Apr & 31st May 2020 (inclusive)
Metric (°C / mm) | Imperial (°F / inches)
Discover more about the USA
Where's hot in Iowa in September?
Below are average maximum temperatures at popular destinations in Iowa in September. Select a destination to see more weather parameters.
Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers
We promise not to share your details
Popular travel offers
*affiliate links: find out how we are funded and why this helps us remain free to use.