Dayton Average Rainfall by Month

This page shows the average precipitation (including snowfall) in each month of the year in Dayton, Ohio. It is based on NOAA data for the years 1991–2020.

Average temperature by month

What's the Rainiest Month in Dayton?

In Dayton, May has the greatest precipitation of any month. On average, Dayton gets 4.5 inches of precipitation in May.

May is also the month where rain is most common. 45.4% of days in May will have at least some rain.

What's the Driest Month in Dayton?

In Dayton, February has the least precipitation of any month. On average, Dayton gets 2.35 inches of precipitation in February.

August is the month with the lowest chance of precipitation. 26.2% of days in August will have measurable rain.

Month	Precipitation	% Chance
January	3.07 in	43.1
February	2.35 in	39.8
March	3.50 in	39.1
April	4.46 in	43.3
May	4.51 in	45.4
June	4.14 in	39.6
July	3.94 in	34.2
August	2.96 in	26.2
September	3.31 in	28.7
October	2.95 in	30.5
November	3.07 in	33.1
December	3.05 in	38.2
Year	41.29 in	36.7

Weather Station Details

Years	Station	Coordinates
1948–2024	Dayton International Airport	location
1893–1947	Dayton	location