September Weather in Millen, United States

Last updated: June 24, 2025

In September, the average temperature in Millen, United States hovers around 26°C (79°F), offering a warm climate that's perfect for outdoor activities. Temperatures can range from a cool 12°C (54°F) to a sizzling 39°C (102°F), so it's wise to prepare for both extremes. Expect about 79 mm (3.1 in) of precipitation over 9 days, accompanied by a high average humidity of 83%—ideal for those who enjoy a tropical feel!

September Temperature in Millen

In September in Millen, the average temperature is 26°C (79°F). The maximum can reach 39°C (102°F) and the minimum can be as low as 12°C (54°F). Be prepared for a warm climate, with occasional cool evenings, making it an ideal time for both outdoor activities and relaxation.

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

The chart illustrates September temperature patterns in Millen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Millen, September typically has an average temperature of 26°C (79°F), with highs reaching up to 39°C (102°F) and lows dropping to around 12°C (54°F).

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

September Precipitation in Millen

In Millen in September, the precipitation amount is 79 mm (3.1 in) spread over 9 days.

September Precipitation Trends in Millen

The chart displays monthly precipitation patterns in Millen, 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 Millen, September typically receives around 79 mm (3.1 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 Millen

In Millen in September, humidity is 83%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making travel an exercise in endurance as the air clings to your skin and saps your energy.

September Average Humidity in Millen

This chart illustrates the average monthly humidity levels in Millen, 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 Millen is approximately 83%, 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 Millen

In Millen 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 Millen.

Maximum UV Index Levels in Millen for September

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

Data source: Millen 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 Millen Compares to Other Months

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

This table compares monthly weather conditions in Millen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (51°F)	84 mm (3.3 inches)	86%	moderate
February Weather	13°C (56°F)	105 mm (4.1 inches)	81%	high
March Weather	16°C (61°F)	66 mm (2.6 inches)	81%	very high
April Weather	19°C (67°F)	105 mm (4.1 inches)	79%	very high
May Weather	24°C (75°F)	82 mm (3.2 inches)	75%	extreme
June Weather	26°C (80°F)	123 mm (4.9 inches)	75%	extreme
July Weather	28°C (83°F)	126 mm (4.9 inches)	80%	extreme
August Weather	28°C (82°F)	128 mm (5.0 inches)	81%	extreme
September Weather	26°C (79°F)	79 mm (3.1 inches)	83%	very high
October Weather	22°C (71°F)	79 mm (3.1 inches)	78%	very high
November Weather	14°C (57°F)	57 mm (2.3 inches)	85%	high
December Weather	11°C (53°F)	118 mm (4.6 inches)	87%	moderate