September Weather in Saint Anne, United States

Last updated: June 24, 2025

In September, the average temperature in Saint Anne, United States is a pleasant 21°C (69°F). However, temperatures can vary significantly, with a minimum of 5°C (41°F) and a maximum reaching up to 34°C (94°F). Expect 73 mm (2.9 in) of precipitation spread over 9 days, contributing to an average humidity of 80%. Be prepared for a mix of mild days and occasionally damp weather!

September Temperature in Saint Anne

In September in Saint Anne, the average temperature is 21°C (69°F), with maximums reaching 34°C (94°F) and minimums dropping as low as 5°C (41°F). This makes it a great time for travelers to enjoy a variety of outdoor activities while being prepared for some temperature fluctuations.

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

The chart illustrates September temperature patterns in Saint Anne, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Anne, September typically has an average temperature of 21°C (69°F), with highs reaching up to 34°C (94°F) and lows dropping to around 5°C (41°F).

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

September Precipitation in Saint Anne

In Saint Anne in September, the precipitation amount is 73 mm (2.9 in), occurring over the course of 9 days.

September Precipitation Trends in Saint Anne

The chart displays monthly precipitation patterns in Saint Anne, 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 Anne, September typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 9 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 Anne

In Saint Anne in September, humidity is 80%. With an average temperature of 21°C (69°F), this humidity feels like a warm, sticky embrace, making outdoor activities a bit challenging for travelers as the air becomes heavy and can lead to fatigue while sightseeing.

September Average Humidity in Saint Anne

This chart illustrates the average monthly humidity levels in Saint Anne, 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 Anne is approximately 80%, 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 Anne

In Saint Anne 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 Anne.

Maximum UV Index Levels in Saint Anne for September

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

Data source: Saint Anne 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 Anne Compares to Other Months

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

This table compares monthly weather conditions in Saint Anne, 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 (28°F)	70 mm (2.7 inches)	82%	moderate
February Weather	-2°C (30°F)	73 mm (2.9 inches)	83%	moderate
March Weather	5°C (41°F)	98 mm (3.9 inches)	84%	high
April Weather	10°C (51°F)	119 mm (4.7 inches)	85%	very high
May Weather	17°C (63°F)	156 mm (6.1 inches)	79%	very high
June Weather	23°C (74°F)	117 mm (4.6 inches)	82%	very high
July Weather	25°C (76°F)	96 mm (3.8 inches)	80%	very high
August Weather	23°C (74°F)	95 mm (3.7 inches)	81%	very high
September Weather	21°C (69°F)	73 mm (2.9 inches)	80%	very high
October Weather	13°C (56°F)	130 mm (5.1 inches)	82%	high
November Weather	5°C (41°F)	65 mm (2.5 inches)	88%	moderate
December Weather	1°C (35°F)	58 mm (2.3 inches)	84%	low