September Weather in Commerce, United States

Last updated: June 24, 2025

In September, the average temperature in Commerce, United States hovers around 24°C (75°F). Expect a range that dips to a minimum of 10°C (51°F) and peaks at a sweltering 36°C (96°F). During this time, precipitation amounts to 123 mm (4.8 in) over about 9 days, contributing to an average humidity level of 76%.

September Temperature in Commerce

In September in Commerce, the average temperature is 24°C (75°F). The maximum can reach 36°C (96°F), and the minimum can be as low as 10°C (51°F). This pleasant climate makes Commerce an ideal destination for travelers seeking a mix of warmth and cool breezes.

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

The chart illustrates September temperature patterns in Commerce, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Commerce, September typically has an average temperature of 24°C (75°F), with highs reaching up to 36°C (96°F) and lows dropping to around 10°C (51°F).

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

September Precipitation in Commerce

In Commerce in September, the precipitation amount is 123 mm (4.8 in) over the course of 9 days.

September Precipitation Trends in Commerce

The chart displays monthly precipitation patterns in Commerce, 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 Commerce, September typically receives around 123 mm (4.8 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 Commerce

In Commerce in September, humidity is 76%. With an average temperature of 24°C (75°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities feel a bit sluggish and urging you to seek shade and hydration.

September Average Humidity in Commerce

This chart illustrates the average monthly humidity levels in Commerce, 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 Commerce is approximately 76%, 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 Commerce

In Commerce 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 Commerce.

Maximum UV Index Levels in Commerce for September

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

Data source: Commerce 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 Commerce Compares to Other Months

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

This table compares monthly weather conditions in Commerce, 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)	107 mm (4.2 inches)	86%	moderate
February Weather	10°C (51°F)	151 mm (5.9 inches)	86%	high
March Weather	13°C (56°F)	125 mm (4.9 inches)	86%	very high
April Weather	17°C (62°F)	123 mm (4.9 inches)	82%	extreme
May Weather	21°C (71°F)	135 mm (5.3 inches)	85%	extreme
June Weather	25°C (76°F)	115 mm (4.5 inches)	85%	extreme
July Weather	26°C (80°F)	107 mm (4.2 inches)	83%	extreme
August Weather	26°C (79°F)	137 mm (5.4 inches)	76%	very high
September Weather	24°C (75°F)	123 mm (4.8 inches)	76%	very high
October Weather	19°C (66°F)	154 mm (6.1 inches)	80%	very high
November Weather	11°C (53°F)	81 mm (3.2 inches)	88%	high
December Weather	9°C (48°F)	137 mm (5.4 inches)	88%	moderate