Wilmington Weather In May
The highest recorded temperature in May for Wilmington Delaware for the past 63 years was 96 degrees Fahrenheit, most recently measured on May 20, 1996, while the mean high temperature is 72. The coldest day reported in Wilmington in May for the past 63 years was 30 most recently encountered on May 1, 1978, and the regular low is 52.
US National Weather Service Wilmington May Weather data records that on May 15, 1978, the high temperature did not exceed 47 degrees Fahrenheit, the lowest high measured in Wilmington in the past 63 years. NWS weather data additionally shows that on May 26, 1991, the lowest recorded temperature on that day did not drop below 74 degrees, the highest low measured in Wilmington in the last 63 years.
NWS data indicates that the daily high temperature in Wilmington on May First averages 69 degrees Fahrenheit and the high on the last day of May averages 78 degrees. The average recorded low temperature in Wilmington on May First is 48 degrees Fahrenheit and the average low on the last day of May is 58 degrees.
Wilmington usually receives an average of 4.15 inches of precipitation during the month. The most rain recorded in a single day, as shown by May Wilmington Weather data, was 2.72 inches on May 29, 1990.