The National Oceanic and Atmospheric Administration (NOAA) released their decennial U.S. Climate Normals data in May of 2021, which provides data on typical climate conditions for locations all over the U.S.
Over the last century, the United States has gotten warmer and wetter. Together, warmer and wetter air produce more extreme weather events, evidenced by a record-setting 22 weather and climate disasters with losses exceeding $1 billion each last year.
Some locations throughout the U.S. are experiencing these changes more rapidly than others. Researchers ranked cities according to the historical average monthly precipitation during the months of May, June, and July. According to the study, southern states get more summer rain than the western states. Regular summer rains drench many states in the South, led by Florida, which experiences more than 6 inches of precipitation per month on average.
For North Carolina, Wilmington and Greensboro get under 6 inches during the months of May and June. If you live in Raleigh or Charlotte, the summer rain averages under 4.10 inches historically.
You can see more on this study here.