Memorial Day Weekend: Rain Possible. Extended data pointing towards wet conditions next weekend. But, we are in a drought, so it's going to be tough to get some good rain into our area.1976 and 1984 were historic Memorial Day weekends for Tulsa. Those years the city saw historic floods. But, it also influenced the city of Tulsa to adopt an innovative storm drainage system. There has not been any major floods for the Tulsa area, since the storm drainage system was implemented.