The most pleasant months of the year for Lancaster are May, September and June. In Lancaster, there are 4 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Lancaster with an average high temperature of 88.6°, which ranks it as warmer than most places in Virginia. February is the snowiest month in Lancaster with 3.8 inches of snow, and 4 months of the year have significant snowfall. The most uncomfortably humid months are July, August and June.