August Weather in Dayton, United States

Last updated: June 24, 2025

In August, the average temperature in Dayton, United States is a pleasant 25°C (76°F). Visitors can expect a minimum temperature of 14°C (58°F), rising to a maximum of 36°C (97°F) on warmer days. However, be prepared for occasional rainfall, as the area sees 131 mm (5.2 in) of precipitation over about 14 days. The average humidity hovers around 65%, adding to the overall climate experience.

August Temperature in Dayton

In August in Dayton, the average temperature is 25°C (76°F). Maximum temperatures can reach 36°C (97°F), while minimums can drop to as low as 14°C (58°F). This makes it an ideal time for travelers seeking warm weather with comfortable evenings.

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 25°C (76°F), with highs reaching up to 36°C (97°F) and lows dropping to around 14°C (58°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 131 mm (5.2 in) spread over the course of 14 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 131 mm (5.2 inches) of precipitation spread over approximately 14 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 Dayton

In Dayton in August, humidity is 65%. With an average temperature of 25°C (76°F), this humidity feels like a warm, enveloping blanket that can make outdoor activities somewhat uncomfortable, requiring frequent breaks and plenty of hydration while traveling.

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 65%, 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	2°C (35°F)	63 mm (2.5 inches)	84%	moderate
February Weather	3°C (39°F)	109 mm (4.3 inches)	82%	moderate
March Weather	6°C (44°F)	107 mm (4.2 inches)	81%	high
April Weather	12°C (54°F)	107 mm (4.2 inches)	78%	very high
May Weather	17°C (63°F)	127 mm (5.0 inches)	69%	very high
June Weather	23°C (73°F)	97 mm (3.8 inches)	69%	very high
July Weather	26°C (79°F)	138 mm (5.4 inches)	62%	very high
August Weather	25°C (76°F)	131 mm (5.2 inches)	65%	very high
September Weather	21°C (71°F)	88 mm (3.5 inches)	68%	very high
October Weather	16°C (61°F)	132 mm (5.2 inches)	74%	high
November Weather	8°C (47°F)	83 mm (3.3 inches)	82%	moderate
December Weather	4°C (39°F)	102 mm (4.0 inches)	80%	low