September Weather in Monon, United States

Last updated: June 24, 2025

The average temperature in Monon, United States during September is a pleasant 21°C (69°F). However, temperatures can vary significantly, with a minimum of 5°C (41°F) and a maximum reaching up to 33°C (92°F). Expect about 65 mm (2.6 in) of precipitation spread over 8 days, coupled with an average humidity of 78%, creating a moist and inviting atmosphere.

September Temperature in Monon

In September in Monon, the average temperature is 21°C (69°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop to as low as 5°C (41°F). This diverse climate makes Monon an ideal destination for travelers seeking both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Monon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Monon, September typically has an average temperature of 21°C (69°F), with highs reaching up to 33°C (92°F) and lows dropping to around 5°C (41°F).

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

September Precipitation in Monon

In Monon in September, the total precipitation amount is 65 mm (2.6 in) spread over the course of 8 days.

September Precipitation Trends in Monon

The chart displays monthly precipitation patterns in Monon, 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 Monon, September typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 8 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 Monon

In Monon in September, humidity is 78%. With an average temperature of 21°C (69°F), this humidity feels like a warm embrace that clings to your skin, making outdoor activities feel more intense and leaving you yearning for refreshing breezes or a cool drink as you explore.

September Average Humidity in Monon

This chart illustrates the average monthly humidity levels in Monon, 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 Monon is approximately 78%, 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 Monon

In Monon 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 Monon.

Maximum UV Index Levels in Monon for September

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

Data source: Monon 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 Monon Compares to Other Months

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

This table compares monthly weather conditions in Monon, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	73 mm (2.9 inches)	85%	moderate
February Weather	-1°C (30°F)	77 mm (3.0 inches)	85%	moderate
March Weather	5°C (42°F)	105 mm (4.1 inches)	86%	high
April Weather	10°C (51°F)	102 mm (4.0 inches)	87%	very high
May Weather	17°C (64°F)	160 mm (6.3 inches)	81%	very high
June Weather	23°C (73°F)	105 mm (4.1 inches)	82%	very high
July Weather	25°C (76°F)	108 mm (4.2 inches)	81%	very high
August Weather	23°C (74°F)	111 mm (4.4 inches)	79%	very high
September Weather	21°C (69°F)	65 mm (2.6 inches)	78%	very high
October Weather	14°C (57°F)	116 mm (4.6 inches)	81%	high
November Weather	5°C (41°F)	74 mm (2.9 inches)	89%	moderate
December Weather	2°C (35°F)	61 mm (2.4 inches)	86%	low