April Weather in Dayton, United States

Last updated: June 24, 2025

In April, the average temperature in Dayton, United States hovers around 4°C (39°F). While you may experience chilly lows of -18°C (0°F), the temperature can also reach a pleasant 24°C (76°F) at its peak. With an average humidity of 70%, it's essential to prepare for changing conditions. Expect to encounter 97 mm (3.8 in) of precipitation spread over about 13 days, so pack your umbrella!

April Temperature in Dayton

In April in Dayton, the average temperature is 4°C (39°F). The maximum can reach 24°C (76°F), while the minimum can be as low as -18°C (0°F). Travelers should prepare for a wide range of temperatures and pack accordingly to enjoy their stay.

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

The chart illustrates April 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, April typically has an average temperature of 4°C (39°F), with highs reaching up to 24°C (76°F) and lows dropping to around -18°C (0°F).

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

April Precipitation in Dayton

In Dayton in April, the precipitation amount is 97 mm (3.8 in) over the course of 13 days.

April Precipitation Trends in Dayton

The chart displays monthly precipitation patterns in Dayton, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Dayton, April typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 13 days.

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

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Millimeters (mm) Inches (in)

April Humidity in Dayton

In Dayton in April humidity is 70%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill enveloping you, making every step outside feel heavier and more pressing, as though the air is thick with moisture, which can quickly lead to an uncomfortable cold if not layered properly for travel.

April Average Humidity in Dayton

This chart illustrates the average monthly humidity levels in Dayton, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Dayton is approximately 70%, offering insight into how humid the weather typically is during this month.

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

April UV Index in Dayton

In Dayton in April, 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 April

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

Data source: Dayton April 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 April 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 April’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 April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	26 mm (1.0 inches)	78%	moderate
February Weather	-7°C (20°F)	45 mm (1.8 inches)	79%	moderate
March Weather	0°C (33°F)	56 mm (2.2 inches)	71%	high
April Weather	4°C (39°F)	97 mm (3.8 inches)	70%	very high
May Weather	10°C (50°F)	109 mm (4.3 inches)	75%	very high
June Weather	16°C (61°F)	84 mm (3.3 inches)	82%	extreme
July Weather	20°C (69°F)	63 mm (2.5 inches)	84%	very high
August Weather	19°C (66°F)	48 mm (1.9 inches)	85%	very high
September Weather	14°C (58°F)	63 mm (2.5 inches)	79%	very high
October Weather	5°C (41°F)	67 mm (2.6 inches)	75%	moderate
November Weather	0°C (33°F)	37 mm (1.5 inches)	75%	moderate
December Weather	-3°C (27°F)	35 mm (1.4 inches)	81%	low