The most pleasant months of the year for Port Chester are June, September and August. In Port Chester, there are 5 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Port Chester with an average high temperature of 84.0°, which ranks it as one of the hottest places in New York. February is the snowiest month in Port Chester with 9.0 inches of snow, and 6 months of the year have significant snowfall. August is the most humid month, though humidity is low for most of the year.