September Weather in Clinton, United States

Last updated: June 24, 2025

In September, the average temperature in Clinton, United States hovers around 24°C (75°F). While you might enjoy pleasant days, be prepared for a range that dips to a minimum of 9°C (49°F) and peaks at a scorching 35°C (95°F). Expect 174 mm (6.8 in) of rainfall spread over 11 days, contributing to a high average humidity of 79%. Embrace the warmth, but don't forget your umbrella!

September Temperature in Clinton

In September in Clinton, the average temperature is 24°C (75°F). Maximums can reach 35°C (95°F) and minimums can be as low as 9°C (49°F). This varied climate makes it an ideal destination for travelers looking to experience both warm sunny days and cooler evenings.

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

The chart illustrates September temperature patterns in Clinton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Clinton, September typically has an average temperature of 24°C (75°F), with highs reaching up to 35°C (95°F) and lows dropping to around 9°C (49°F).

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

September Precipitation in Clinton

In Clinton in September, the precipitation amount is 174 mm (6.8 in) spread over 11 days.

September Precipitation Trends in Clinton

The chart displays monthly precipitation patterns in Clinton, 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 Clinton, September typically receives around 174 mm (6.8 inches) of precipitation spread over approximately 11 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 Clinton

In Clinton in September, humidity is 79%. With an average temperature of 24°C (75°F), this humidity feels like a warm, tropical embrace, making traveling quite sticky and requiring ample hydration and light clothing to keep comfortable while exploring.

September Average Humidity in Clinton

This chart illustrates the average monthly humidity levels in Clinton, 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 Clinton is approximately 79%, 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 Clinton

In Clinton in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Clinton.

Maximum UV Index Levels in Clinton for September

The chart shows the monthly maximum UV Index (UVI) for Clinton 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 Clinton typically reaches 9, which falls under the very high exposure category.

Data source: Clinton 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 Clinton Compares to Other Months

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

This table compares monthly weather conditions in Clinton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (46°F)	86 mm (3.4 inches)	85%	moderate
February Weather	10°C (51°F)	86 mm (3.4 inches)	82%	high
March Weather	12°C (55°F)	68 mm (2.7 inches)	81%	very high
April Weather	17°C (64°F)	96 mm (3.8 inches)	80%	very high
May Weather	22°C (72°F)	121 mm (4.8 inches)	81%	extreme
June Weather	25°C (77°F)	145 mm (5.7 inches)	81%	extreme
July Weather	27°C (81°F)	127 mm (5.0 inches)	81%	extreme
August Weather	26°C (79°F)	174 mm (6.9 inches)	80%	very high
September Weather	24°C (75°F)	174 mm (6.8 inches)	79%	very high
October Weather	19°C (67°F)	54 mm (2.1 inches)	80%	very high
November Weather	12°C (53°F)	80 mm (3.2 inches)	85%	moderate
December Weather	9°C (49°F)	113 mm (4.4 inches)	86%	moderate