September Weather in Prairieville, United States

Last updated: June 24, 2025

In Prairieville, United States, the average temperature in September hovers around 26°C (79°F). However, temperatures can dip as low as 13°C (57°F) and soar to a sweltering 36°C (97°F). Expect a decent amount of rain, with 149 mm (5.9 in) falling over approximately 15 days. Additionally, the air tends to be quite humid, boasting an average humidity level of 79%.

September Temperature in Prairieville

In September in Prairieville, the average temperature is 26°C (79°F). Maximums can reach 36°C (97°F), while minimums can drop to as low as 13°C (57°F). This makes Prairieville a great destination for travelers looking to enjoy warm weather with comfortable evenings.

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

The chart illustrates September temperature patterns in Prairieville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Prairieville, September typically has an average temperature of 26°C (79°F), with highs reaching up to 36°C (97°F) and lows dropping to around 13°C (57°F).

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

September Precipitation in Prairieville

In Prairieville in September, the precipitation amount is 149 mm (5.9 in) over a period of 15 days.

September Precipitation Trends in Prairieville

The chart displays monthly precipitation patterns in Prairieville, 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 Prairieville, September typically receives around 149 mm (5.9 inches) of precipitation spread over approximately 15 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 Prairieville

In Prairieville in September humidity is 79%. With an average temperature of 26°C (79°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel exhausting. Travelers should be prepared for a heavy air that clings to the skin, making hydration essential while navigating the sights and sounds of the city.

September Average Humidity in Prairieville

This chart illustrates the average monthly humidity levels in Prairieville, 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 Prairieville 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 Prairieville

In Prairieville in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Prairieville.

Maximum UV Index Levels in Prairieville for September

The chart shows the monthly maximum UV Index (UVI) for Prairieville 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 Prairieville typically reaches 10, which falls under the very high exposure category.

Data source: Prairieville 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 Prairieville Compares to Other Months

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

This table compares monthly weather conditions in Prairieville, 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)	105 mm (4.1 inches)	83%	moderate
February Weather	15°C (59°F)	114 mm (4.5 inches)	83%	very high
March Weather	18°C (65°F)	75 mm (3.0 inches)	80%	very high
April Weather	20°C (69°F)	130 mm (5.1 inches)	81%	extreme
May Weather	25°C (77°F)	139 mm (5.5 inches)	81%	extreme
June Weather	27°C (81°F)	192 mm (7.6 inches)	78%	extreme
July Weather	28°C (82°F)	199 mm (7.8 inches)	79%	extreme
August Weather	28°C (82°F)	194 mm (7.6 inches)	79%	extreme
September Weather	26°C (79°F)	149 mm (5.9 inches)	79%	very high
October Weather	22°C (73°F)	117 mm (4.6 inches)	77%	very high
November Weather	16°C (60°F)	73 mm (2.9 inches)	85%	high
December Weather	14°C (57°F)	113 mm (4.5 inches)	88%	moderate