August Weather in Wheaton, United States

Last updated: June 24, 2025

In August, the average temperature in Wheaton, United States hovers around 25°C (77°F), with minimums reaching as low as 14°C (57°F) and maximums peaking at 35°C (96°F). This month also sees 120 mm (4.7 in) of precipitation spread over 13 days, contributing to an average humidity of 68%. Stay prepared for a mix of warmth and moisture!

August Temperature in Wheaton

In August in Wheaton, the average temperature is 25°C (77°F). Maximums can reach 35°C (96°F), while minimums can drop as low as 14°C (57°F). It's a perfect time for travelers to enjoy a comfortable climate with ideal conditions for outdoor activities.

August Weather in Wheaton: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Wheaton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wheaton, August typically has an average temperature of 25°C (77°F), with highs reaching up to 35°C (96°F) and lows dropping to around 14°C (57°F).

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

August Precipitation in Wheaton

In Wheaton in August, the precipitation amount is 120 mm (4.7 in) spread over 13 days.

August Precipitation Trends in Wheaton

The chart displays monthly precipitation patterns in Wheaton, 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 Wheaton, August typically receives around 120 mm (4.7 inches) of precipitation spread over approximately 13 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

August Humidity in Wheaton

In Wheaton in August, humidity is 68%. With an average temperature of 25°C (77°F), this humidity feels like a warm embrace that can quickly become stifling for traveling, making outdoor activities feel more strenuous and the air thick and heavy.

August Average Humidity in Wheaton

This chart illustrates the average monthly humidity levels in Wheaton, 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 Wheaton is approximately 68%, 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 Wheaton

In Wheaton in August, 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 Wheaton.

Maximum UV Index Levels in Wheaton for August

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

Data source: Wheaton 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 Wheaton Compares to Other Months

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

This table compares monthly weather conditions in Wheaton, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (36°F)	91 mm (3.6 inches)	81%	moderate
February Weather	4°C (39°F)	95 mm (3.7 inches)	78%	high
March Weather	10°C (50°F)	159 mm (6.3 inches)	76%	high
April Weather	13°C (56°F)	174 mm (6.8 inches)	78%	very high
May Weather	19°C (66°F)	172 mm (6.8 inches)	83%	very high
June Weather	24°C (76°F)	104 mm (4.1 inches)	83%	extreme
July Weather	26°C (79°F)	93 mm (3.7 inches)	78%	extreme
August Weather	25°C (77°F)	120 mm (4.7 inches)	68%	very high
September Weather	23°C (73°F)	56 mm (2.2 inches)	64%	very high
October Weather	15°C (59°F)	161 mm (6.3 inches)	70%	high
November Weather	8°C (47°F)	70 mm (2.7 inches)	83%	moderate
December Weather	6°C (42°F)	61 mm (2.4 inches)	87%	moderate