September Weather in Mills, United States

Last updated: June 24, 2025

In September, the average temperature in Mills, United States hovers around 16°C (60°F), but be prepared for a wide range of temperatures—minimums can drop to -9°C (16°F), while maximums can soar to 35°C (96°F). Expect 29 mm (1.2 in) of precipitation spread over 6 days, with humidity levels averaging around 72%. Whether you're planning outdoor adventures or cozy indoor activities, this month offers a mix of weather conditions to consider!

September Temperature in Mills

In September in Mills, the average temperature is 16°C (60°F). The maximum can reach 35°C (96°F), while the minimum can drop as low as -9°C (16°F). Be prepared for a wide range of temperatures when traveling to Mills this month.

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

The chart illustrates September temperature patterns in Mills, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mills, September typically has an average temperature of 16°C (60°F), with highs reaching up to 35°C (96°F) and lows dropping to around -9°C (16°F).

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

September Precipitation in Mills

In Mills in September, the total precipitation amount is 29 mm (1.2 in) over the course of 6 days.

September Precipitation Trends in Mills

The chart displays monthly precipitation patterns in Mills, 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 Mills, September typically receives around 29 mm (1.2 inches) of precipitation spread over approximately 6 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 Mills

In Mills in September, humidity is 72%. With an average temperature of 16°C (60°F), this humidity feels like a warm, damp blanket enveloping you as you travel, making it essential to stay hydrated and take breaks in shaded areas to enjoy your journey comfortably.

September Average Humidity in Mills

This chart illustrates the average monthly humidity levels in Mills, 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 Mills is approximately 72%, 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 Mills

In Mills 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 Mills.

Maximum UV Index Levels in Mills for September

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

Data source: Mills 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 Mills Compares to Other Months

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

This table compares monthly weather conditions in Mills, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	23 mm (0.9 inches)	79%	moderate
February Weather	-7°C (19°F)	31 mm (1.2 inches)	81%	high
March Weather	-1°C (31°F)	48 mm (1.9 inches)	70%	high
April Weather	3°C (38°F)	59 mm (2.3 inches)	67%	extreme
May Weather	10°C (50°F)	70 mm (2.7 inches)	70%	very high
June Weather	18°C (65°F)	30 mm (1.2 inches)	75%	extreme
July Weather	22°C (72°F)	17 mm (0.7 inches)	76%	extreme
August Weather	21°C (69°F)	19 mm (0.7 inches)	76%	extreme
September Weather	16°C (60°F)	29 mm (1.2 inches)	72%	very high
October Weather	5°C (41°F)	43 mm (1.7 inches)	70%	high
November Weather	1°C (34°F)	26 mm (1.0 inches)	76%	moderate
December Weather	-5°C (24°F)	27 mm (1.1 inches)	81%	moderate