That 30 inches stands as the greatest snow depth on record at West Chester. Usually the snow cover disappears rapidly under the relatively mild winter temperatures, the longest period when at least an inch or more of snow stayed on the ground was just 37 days back in January and February 1936. An inch or more of snow is observed on about 25 days and 6 inches or more on an average of 6 days annually. The threat of snow diminishes rapidly after mid-March. Spring and fall are of course the transition periods.
Winds are west-northwesterly at the start of spring and back to southwesterly by late spring.
As fall progresses the prevailing winds gradually swing back to the west-northwest once again. Wind speed averages 8 to 10 mph during both spring and fall. Extended periods of dry weather are seldom experienced, the longest being 27 days in October 1963. The warm dry fall days with abundant sunshine enhancing the autumnal change in colors represent one of the most pleasant times of the year. The growing season averages 189 days, although it has varied from 135 days in 1963 to 230 days in 1931.