Dayton Weather In May
The highest recorded temperature in May for Dayton for the past 67 years was 98 degrees Fahrenheit, on May 26, 1911, and the average high is 71. The lowest documented temperature for Dayton for the past 67 years in May was 28 on May 11, 1913, while the typical low recorded temperature is 51.
National Weather Service historical Dayton May Weather data indicates that on May 9, 1923, the recorded high did not exceed 41 degrees Fahrenheit, the lowest high measured in Dayton in the past 67 years. NWS weather data additionally shows that on May 29, 1987, the lowest recorded temperature on that day did not drop below 75 degrees, the highest low measured in Dayton in the last 67 years.
According to the National Weather Service, the high temperature in Dayton in May on the first day of the month averages 70 degrees and the high on the last day of the month averages 80 degrees. The low temperature in Dayton in May on the first day of the month averages 48 degrees and the low temperature on the last day of the month averages 58 degrees.
Dayton usually receives an average of 4.17 inches of rain during the month. The most rain recorded in a single day, as shown by May Dayton Weather data, was 3.9 inches on May 18, 1991.