August Weather in Dayton, United States

Last updated: June 24, 2025

In August, the average temperature in Dayton, United States is a comfortable 21°C (71°F), with minimums dipping to 11°C (52°F) and maximums soaring up to 32°C (91°F). You can expect 144 mm (5.7 in) of precipitation over 12 days, contributing to an average humidity of 81%. Be prepared for a blend of warm days and refreshing showers!

August Temperature in Dayton

In August in Dayton, the average temperature is 21°C (71°F). Maximums can reach up to 32°C (91°F), while minimums can drop as low as 11°C (52°F). It's a great time to visit for pleasant weather and a range of outdoor activities.

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

The chart illustrates August temperature patterns in Dayton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dayton, August typically has an average temperature of 21°C (71°F), with highs reaching up to 32°C (91°F) and lows dropping to around 11°C (52°F).

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

August Precipitation in Dayton

In Dayton in August, the precipitation amount is 144 mm (5.7 in) over the course of 12 days.

August Precipitation Trends in Dayton

The chart displays monthly precipitation patterns in Dayton, 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 Dayton, August typically receives around 144 mm (5.7 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 Dayton

In Dayton in August, humidity is 81%. With an average temperature of 21°C (71°F), this humidity feels like a warm, enveloping blanket that makes traveling feel both refreshing and slightly heavy, often leading to a sticky sensation that can quickly deplete your energy.

August Average Humidity in Dayton

This chart illustrates the average monthly humidity levels in Dayton, 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 Dayton is approximately 81%, 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 Dayton

In Dayton 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 Dayton.

Maximum UV Index Levels in Dayton for August

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

Data source: Dayton 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 Dayton Compares to Other Months

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

This table compares monthly weather conditions in Dayton, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (16°F)	22 mm (0.9 inches)	87%	low
February Weather	-9°C (16°F)	29 mm (1.1 inches)	90%	moderate
March Weather	0°C (33°F)	53 mm (2.1 inches)	85%	moderate
April Weather	6°C (43°F)	93 mm (3.6 inches)	84%	high
May Weather	15°C (59°F)	108 mm (4.2 inches)	78%	very high
June Weather	22°C (71°F)	77 mm (3.0 inches)	80%	very high
July Weather	23°C (74°F)	99 mm (3.9 inches)	81%	very high
August Weather	21°C (71°F)	144 mm (5.7 inches)	81%	very high
September Weather	18°C (64°F)	112 mm (4.4 inches)	81%	high
October Weather	9°C (48°F)	103 mm (4.1 inches)	84%	moderate
November Weather	0°C (33°F)	34 mm (1.3 inches)	88%	moderate
December Weather	-5°C (23°F)	47 mm (1.8 inches)	84%	low