September Weather in Sioux Center, United States

Last updated: June 24, 2025

In September, the average temperature in Sioux Center, United States hovers around 19°C (66°F). While you can expect cool lows of 3°C (38°F), temperatures can soar to a maximum of 33°C (92°F). Prepare for occasional showers, as 100 mm (3.9 in) of precipitation may grace the area over a span of 9 days. With an average humidity of 75%, it's a month of vibrant contrasts!

September Temperature in Sioux Center

In September in Sioux Center, the average temperature is 19°C (66°F). Maximum temperatures can reach 33°C (92°F), while minimums can dip as low as 3°C (38°F). This variety in weather makes Sioux Center an ideal destination for travelers seeking both warm and cool experiences.

September Weather in Sioux Center: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sioux Center, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sioux Center, September typically has an average temperature of 19°C (66°F), with highs reaching up to 33°C (92°F) and lows dropping to around 3°C (38°F).

Data source: Temperature data for Sioux Center generated using information from the Copernicus Climate Change Service.

September Precipitation in Sioux Center

In Sioux Center in September, the precipitation amount is 100 mm (3.9 in) spread over 9 days.

September Precipitation Trends in Sioux Center

The chart displays monthly precipitation patterns in Sioux Center, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Sioux Center, September typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Sioux Center

In Sioux Center in September humidity is 75%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making it slightly uncomfortable for traveling as you navigate through the thick, muggy air.

September Average Humidity in Sioux Center

This chart illustrates the average monthly humidity levels in Sioux Center, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Sioux Center is approximately 75%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sioux Center

In Sioux Center in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Sioux Center.

Maximum UV Index Levels in Sioux Center for September

The chart shows the monthly maximum UV Index (UVI) for Sioux Center in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Sioux Center typically reaches 8, which falls under the very high exposure category.

Data source: Sioux Center September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Sioux Center Compares to Other Months

Weather in Sioux Center varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sioux Center, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Sioux Center, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	26 mm (1.0 inches)	80%	low
February Weather	-6°C (21°F)	30 mm (1.2 inches)	84%	moderate
March Weather	2°C (37°F)	73 mm (2.9 inches)	75%	moderate
April Weather	8°C (46°F)	93 mm (3.7 inches)	79%	very high
May Weather	15°C (60°F)	141 mm (5.6 inches)	74%	very high
June Weather	23°C (73°F)	106 mm (4.2 inches)	81%	extreme
July Weather	24°C (76°F)	78 mm (3.1 inches)	82%	very high
August Weather	22°C (72°F)	100 mm (3.9 inches)	80%	very high
September Weather	19°C (66°F)	100 mm (3.9 inches)	75%	very high
October Weather	10°C (49°F)	81 mm (3.2 inches)	77%	moderate
November Weather	2°C (36°F)	27 mm (1.1 inches)	85%	moderate
December Weather	-3°C (27°F)	39 mm (1.5 inches)	83%	moderate