August Weather in Saint Clair, United States

Last updated: June 24, 2025

In August, the average temperature in Saint Clair, United States is a pleasant 21°C (71°F), with temperatures ranging from a cool 10°C (50°F) to a warm 35°C (96°F). Expect 119 mm (4.7 in) of precipitation spread across approximately 12 days, and humidity levels hovering around 77%. Whether you’re enjoying a sunny day or a refreshing drizzle, this month in Saint Clair offers a delightful mix of weather experiences!

August Temperature in Saint Clair

In August in Saint Clair, the average temperature is 21°C (71°F), with maximums reaching 35°C (96°F) and minimums dropping as low as 10°C (50°F). This makes Saint Clair a great destination for travelers seeking warm days and cooler nights, perfect for outdoor activities and exploring the local culture.

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

The chart illustrates August temperature patterns in Saint Clair, 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, August typically has an average temperature of 21°C (71°F), with highs reaching up to 35°C (96°F) and lows dropping to around 10°C (50°F).

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

August Precipitation in Saint Clair

In Saint Clair in August, the total precipitation amount is 119 mm (4.7 in), falling over a span of 12 days.

August Precipitation Trends in Saint Clair

The chart displays monthly precipitation patterns in Saint Clair, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Saint Clair, August typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Saint Clair

In Saint Clair in August, humidity is 77%. With an average temperature of 21°C (71°F), this humidity feels like a warm embrace that envelops you, making it both refreshing and slightly heavy, which can be a bit tiring for traveling.

August Average Humidity in Saint Clair

This chart illustrates the average monthly humidity levels in Saint Clair, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Saint Clair is approximately 77%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Saint Clair

In Saint Clair in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Saint Clair.

Maximum UV Index Levels in Saint Clair for August

The chart shows the monthly maximum UV Index (UVI) for Saint Clair in August, 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 August, the maximum UV index in Saint Clair typically reaches 9, which falls under the very high exposure category.

Data source: Saint Clair August 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 August Weather in Saint Clair Compares to Other Months

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

This table compares monthly weather conditions in Saint Clair, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (17°F)	34 mm (1.3 inches)	82%	moderate
February Weather	-9°C (17°F)	41 mm (1.6 inches)	84%	moderate
March Weather	1°C (34°F)	68 mm (2.7 inches)	80%	moderate
April Weather	7°C (45°F)	91 mm (3.6 inches)	81%	very high
May Weather	15°C (60°F)	140 mm (5.5 inches)	74%	very high
June Weather	22°C (72°F)	118 mm (4.7 inches)	80%	very high
July Weather	23°C (74°F)	103 mm (4.1 inches)	80%	very high
August Weather	21°C (71°F)	119 mm (4.7 inches)	77%	very high
September Weather	18°C (65°F)	137 mm (5.4 inches)	75%	very high
October Weather	9°C (49°F)	93 mm (3.7 inches)	80%	moderate
November Weather	1°C (35°F)	36 mm (1.4 inches)	87%	moderate
December Weather	-4°C (25°F)	44 mm (1.7 inches)	83%	moderate