Male flowers outnumber female flowers and always appear first.
It takes several weeks of blooming before fruits start to set . Bees are necessary to pollenize the fruit and bees don't leave the hive when it is a cloudy or rainy day. Thus, with several cloudy days in a row you don't get a lot of fruit to set. In addition, there seem to be few native or wild bees to assist in pollination due to growing problems with bee pests. We need warm weather to encourage good growth and blooming, along with bright, sunny days to encourage bees.