September Weather in Mount Carroll, United States

Last updated: June 24, 2025

In Mount Carroll, United States, the weather in September brings an average temperature of 20°C (67°F). Expect minimums dipping to 3°C (38°F) and soaring to maximums of 33°C (92°F). Prepare for 116 mm (4.6 in) of precipitation over approximately 10 days and a noteworthy average humidity of 78%.

September Temperature in Mount Carroll

In September in Mount Carroll, the average temperature is 20°C (67°F). Maximums can reach 33°C (92°F), while minimums can be as low as 3°C (38°F). This makes it a great time to visit for travelers seeking mild weather and pleasant experiences.

September Weather in Mount Carroll: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Mount Carroll, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mount Carroll, September typically has an average temperature of 20°C (67°F), with highs reaching up to 33°C (92°F) and lows dropping to around 3°C (38°F).

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

September Precipitation in Mount Carroll

In Mount Carroll in September, the total precipitation amount is 116 mm (4.6 in) over a span of 10 days.

September Precipitation Trends in Mount Carroll

The chart displays monthly precipitation patterns in Mount Carroll, 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 Mount Carroll, September typically receives around 116 mm (4.6 inches) of precipitation spread over approximately 10 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 Mount Carroll

In Mount Carroll in September humidity is 78%. With an average temperature of 20°C (67°F), this humidity feels like walking through a warm, thick blanket, making travel a bit sticky and requiring frequent breaks to find shade and cool refreshments.

September Average Humidity in Mount Carroll

This chart illustrates the average monthly humidity levels in Mount Carroll, 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 Mount Carroll 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 Mount Carroll

In Mount Carroll 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 Mount Carroll.

Maximum UV Index Levels in Mount Carroll for September

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

Data source: Mount Carroll 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 Mount Carroll Compares to Other Months

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

This table compares monthly weather conditions in Mount Carroll, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	58 mm (2.3 inches)	81%	moderate
February Weather	-4°C (25°F)	59 mm (2.3 inches)	81%	moderate
March Weather	4°C (39°F)	81 mm (3.2 inches)	81%	high
April Weather	9°C (48°F)	103 mm (4.0 inches)	82%	very high
May Weather	16°C (61°F)	145 mm (5.7 inches)	78%	very high
June Weather	22°C (72°F)	136 mm (5.3 inches)	81%	very high
July Weather	24°C (76°F)	90 mm (3.6 inches)	79%	very high
August Weather	22°C (73°F)	89 mm (3.5 inches)	77%	very high
September Weather	20°C (67°F)	116 mm (4.6 inches)	78%	very high
October Weather	12°C (53°F)	113 mm (4.5 inches)	78%	high
November Weather	3°C (38°F)	49 mm (1.9 inches)	87%	moderate
December Weather	0°C (31°F)	50 mm (2.0 inches)	84%	low