September Weather in Pierre Part, United States

Last updated: June 24, 2025

In September, the average temperature in Pierre Part, United States hovers around 26°C (80°F). Expect a minimum of 15°C (58°F) and a maximum of 35°C (96°F), offering a warm backdrop for activities. However, be prepared for some rain, as precipitation amounts to 155 mm (6.1 in) over roughly 15 days. With an average humidity of 79%, it's a perfect time to experience the vibrant atmosphere of the region!

September Temperature in Pierre Part

In September in Pierre Part, the average temperature is 26°C (80°F). Maximums can reach 35°C (96°F), while minimums can drop as low as 15°C (58°F). Be prepared for warm days and cooler evenings, making it an ideal time for outdoor activities and exploration.

September Weather in Pierre Part: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Pierre Part, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pierre Part, September typically has an average temperature of 26°C (80°F), with highs reaching up to 35°C (96°F) and lows dropping to around 15°C (58°F).

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

September Precipitation in Pierre Part

In Pierre Part in September, the precipitation amount is 155 mm (6.1 in) over a period of 15 days.

September Precipitation Trends in Pierre Part

The chart displays monthly precipitation patterns in Pierre Part, 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 Pierre Part, September typically receives around 155 mm (6.1 inches) of precipitation spread over approximately 15 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 Pierre Part

In Pierre Part in September, humidity is 79%. With an average temperature of 26°C (80°F), this humidity feels like an enveloping warm blanket, making travel feel slightly sluggish and prompting frequent hydration breaks to stay comfortable while exploring the sights.

September Average Humidity in Pierre Part

This chart illustrates the average monthly humidity levels in Pierre Part, 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 Pierre Part 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 Pierre Part

In Pierre Part in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Pierre Part.

Maximum UV Index Levels in Pierre Part for September

The chart shows the monthly maximum UV Index (UVI) for Pierre Part 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 Pierre Part typically reaches 11, which falls under the extreme exposure category.

Data source: Pierre Part 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 Pierre Part Compares to Other Months

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

This table compares monthly weather conditions in Pierre Part, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (54°F)	94 mm (3.7 inches)	81%	moderate
February Weather	15°C (60°F)	107 mm (4.2 inches)	81%	very high
March Weather	18°C (65°F)	67 mm (2.6 inches)	79%	very high
April Weather	21°C (69°F)	120 mm (4.7 inches)	81%	extreme
May Weather	25°C (77°F)	139 mm (5.5 inches)	77%	extreme
June Weather	27°C (81°F)	190 mm (7.5 inches)	74%	extreme
July Weather	28°C (83°F)	214 mm (8.4 inches)	74%	extreme
August Weather	28°C (82°F)	195 mm (7.7 inches)	73%	extreme
September Weather	26°C (80°F)	155 mm (6.1 inches)	79%	extreme
October Weather	23°C (73°F)	108 mm (4.3 inches)	77%	very high
November Weather	16°C (61°F)	69 mm (2.7 inches)	81%	high
December Weather	14°C (58°F)	110 mm (4.3 inches)	84%	moderate