May in York is the rainiest month of the year. In May, the weather in York is typically warm. Average daily high temperature in May is about 20 degrees above zero. On average, York has 17 rainy, 7 sunny, 6 partly cloudy, and 1 cloudy day in May. The rains are usually heavy. May as well as January, February, March, and December is considered the most uncomfortable time to visit York.