September Weather in Saint Clair Shores, United States

Last updated: June 24, 2025

In September, the average temperature in Saint Clair Shores, United States hovers around 19°C (66°F). Expect a refreshing range with minimums dipping to 3°C (38°F) and maximums soaring up to 34°C (93°F). On average, you'll encounter 60 mm (2.4 in) of precipitation spread over 8 days, alongside a notable 80% humidity that adds to the warm, inviting atmosphere.

September Temperature in Saint Clair Shores

In September in Saint Clair Shores, the average temperature is 19°C (66°F). Maximums can reach 34°C (93°F), while minimums can dip to as low as 3°C (38°F). This variability makes Saint Clair Shores a great destination for travelers who enjoy diverse weather experiences.

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

The chart illustrates September temperature patterns in Saint Clair Shores, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Clair Shores, September typically has an average temperature of 19°C (66°F), with highs reaching up to 34°C (93°F) and lows dropping to around 3°C (38°F).

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

September Precipitation in Saint Clair Shores

In Saint Clair Shores in September, the total precipitation amount is 60 mm (2.4 in) spread over the course of 8 days.

September Precipitation Trends in Saint Clair Shores

The chart displays monthly precipitation patterns in Saint Clair Shores, 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 Clair Shores, September typically receives around 60 mm (2.4 inches) of precipitation spread over approximately 8 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 Saint Clair Shores

In Saint Clair Shores in September humidity is 80%. With an average temperature of 19°C (66°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor activities feel more strenuous and sticky, which can ultimately dampen the experience of traveling.

September Average Humidity in Saint Clair Shores

This chart illustrates the average monthly humidity levels in Saint Clair Shores, 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 Clair Shores 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 Clair Shores

In Saint Clair Shores 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 Clair Shores.

Maximum UV Index Levels in Saint Clair Shores for September

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

Data source: Saint Clair Shores 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 Clair Shores Compares to Other Months

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

This table compares monthly weather conditions in Saint Clair Shores, 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 (27°F)	61 mm (2.4 inches)	88%	low
February Weather	-2°C (29°F)	64 mm (2.5 inches)	87%	moderate
March Weather	3°C (37°F)	65 mm (2.5 inches)	85%	moderate
April Weather	8°C (47°F)	89 mm (3.5 inches)	86%	very high
May Weather	15°C (60°F)	105 mm (4.1 inches)	80%	very high
June Weather	21°C (70°F)	89 mm (3.5 inches)	80%	very high
July Weather	24°C (75°F)	81 mm (3.2 inches)	80%	very high
August Weather	23°C (73°F)	75 mm (3.0 inches)	80%	very high
September Weather	19°C (66°F)	60 mm (2.4 inches)	80%	very high
October Weather	13°C (55°F)	96 mm (3.8 inches)	84%	moderate
November Weather	4°C (40°F)	72 mm (2.8 inches)	89%	moderate
December Weather	0°C (33°F)	53 mm (2.1 inches)	86%	low