September Weather in Saint Leonard, United States

Last updated: June 24, 2025

In Saint Leonard, United States, the average temperature in September hovers around 23°C (74°F), making it a pleasant time to explore. Expect temperatures to range from a cool 13°C (56°F) to a warm 31°C (89°F). During this month, precipitation can total approximately 109 mm (4.3 in) over about 10 days, with an average humidity of 75%. Pack accordingly to enjoy the best of what this vibrant locale has to offer!

September Temperature in Saint Leonard

In September in Saint Leonard, the average temperature is 23°C (74°F). Maximums can reach 31°C (89°F), while minimums can be as low as 13°C (56°F). This pleasant climate makes it an ideal time for outdoor adventures and sightseeing.

September Weather in Saint Leonard: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Saint Leonard, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Leonard, September typically has an average temperature of 23°C (74°F), with highs reaching up to 31°C (89°F) and lows dropping to around 13°C (56°F).

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

September Precipitation in Saint Leonard

In Saint Leonard in September, the precipitation amount is 109 mm (4.3 in) spread over 10 days.

September Precipitation Trends in Saint Leonard

The chart displays monthly precipitation patterns in Saint Leonard, 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 Saint Leonard, September typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 10 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 Saint Leonard

In Saint Leonard in September, humidity is 75%. With an average temperature of 23°C (74°F), this humidity feels like a warm, heavy blanket wrapping around you, making it feel more sweltering than it actually is, which can be quite uncomfortable for traveling.

September Average Humidity in Saint Leonard

This chart illustrates the average monthly humidity levels in Saint Leonard, 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 Saint Leonard is approximately 75%, 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 Saint Leonard

In Saint Leonard in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Saint Leonard.

Maximum UV Index Levels in Saint Leonard for September

The chart shows the monthly maximum UV Index (UVI) for Saint Leonard 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 Saint Leonard typically reaches 8, which falls under the very high exposure category.

Data source: Saint Leonard 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 Saint Leonard Compares to Other Months

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

This table compares monthly weather conditions in Saint Leonard, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (39°F)	71 mm (2.8 inches)	84%	moderate
February Weather	5°C (41°F)	112 mm (4.4 inches)	83%	moderate
March Weather	8°C (47°F)	88 mm (3.5 inches)	83%	high
April Weather	13°C (56°F)	95 mm (3.7 inches)	81%	very high
May Weather	19°C (66°F)	129 mm (5.1 inches)	78%	very high
June Weather	24°C (75°F)	94 mm (3.7 inches)	79%	very high
July Weather	27°C (81°F)	145 mm (5.7 inches)	74%	very high
August Weather	26°C (79°F)	148 mm (5.8 inches)	72%	very high
September Weather	23°C (74°F)	109 mm (4.3 inches)	75%	very high
October Weather	18°C (64°F)	132 mm (5.2 inches)	81%	high
November Weather	10°C (50°F)	91 mm (3.6 inches)	85%	moderate
December Weather	6°C (43°F)	101 mm (4.0 inches)	84%	moderate