September Weather in Minooka, United States

Last updated: June 24, 2025

In Minooka, United States, the average temperature in September hovers around 20°C (68°F). However, be prepared for temperature swings, as it can drop to a chilly 3°C (38°F) or soar up to a sweltering 34°C (94°F). With 85 mm (3.3 in) of precipitation spread over 9 days, you'll want to keep an umbrella handy. Don't forget, the average humidity sits at a balmy 80%, adding to the local charm!

September Temperature in Minooka

In September in Minooka, the average temperature is 20°C (68°F). Maximum temperatures can reach 34°C (94°F), while minimums can dip as low as 3°C (38°F). Overall, it's an ideal time for travelers to enjoy a mix of warm days and cool nights in Minooka.

September Weather in Minooka: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Minooka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Minooka, September typically has an average temperature of 20°C (68°F), with highs reaching up to 34°C (94°F) and lows dropping to around 3°C (38°F).

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

September Precipitation in Minooka

In Minooka in September, the precipitation amount is 85 mm (3.3 in) over the course of 9 days.

September Precipitation Trends in Minooka

The chart displays monthly precipitation patterns in Minooka, 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 Minooka, September typically receives around 85 mm (3.3 inches) of precipitation spread over approximately 9 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Minooka

In Minooka in September, humidity is 80%. With an average temperature of 20°C (68°F), this humidity feels like traveling through a warm, dense blanket that clings to your skin, making you feel both sticky and lethargic as you explore the sights.

September Average Humidity in Minooka

This chart illustrates the average monthly humidity levels in Minooka, 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 Minooka is approximately 80%, 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 Minooka

In Minooka 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 Minooka.

Maximum UV Index Levels in Minooka for September

The chart shows the monthly maximum UV Index (UVI) for Minooka 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 Minooka typically reaches 8, which falls under the very high exposure category.

Data source: Minooka 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 Minooka Compares to Other Months

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

This table compares monthly weather conditions in Minooka, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (26°F)	64 mm (2.5 inches)	82%	moderate
February Weather	-2°C (28°F)	65 mm (2.6 inches)	83%	moderate
March Weather	4°C (40°F)	89 mm (3.5 inches)	84%	high
April Weather	10°C (49°F)	119 mm (4.7 inches)	85%	very high
May Weather	17°C (62°F)	156 mm (6.2 inches)	79%	very high
June Weather	22°C (73°F)	137 mm (5.4 inches)	82%	very high
July Weather	24°C (76°F)	111 mm (4.4 inches)	80%	very high
August Weather	23°C (74°F)	80 mm (3.2 inches)	81%	very high
September Weather	20°C (68°F)	85 mm (3.3 inches)	80%	very high
October Weather	13°C (55°F)	135 mm (5.3 inches)	82%	high
November Weather	4°C (40°F)	59 mm (2.3 inches)	88%	moderate
December Weather	1°C (34°F)	54 mm (2.1 inches)	84%	low