The average precipitation is per year, which is fairly evenly distributed through the year. The driest month on average is February, with of precipitation on average, while the wettest month is July with of rainfall on average which corresponds with the annual peak in thunderstorm activity. The all-time single-day rainfall record is on September 16, 1999, during the passage of Hurricane Floyd. The all-time monthly rainfall record is in August 1955, due to the passage of Hurricane Connie and Hurricane Diane. The wettest year on record was 1996, when of precipitation fell. On the flip side, the driest month on record was October 1963, when only of rain was recorded. The of precipitation recorded in 1957 were the lowest ever for the city.