Acadia National Park driest month with 3.3" (84 mm). Precipitation days are spread evenly throughout the year with January averaging the most days, about 11, while August averages the least, about 8, and all other months average 9 or 10 days. The annual average days with precipitation is 115 which consists of about 82 rainy days and about 33 days with frozen, or freezing, precipitation (snow, sleet, hail, freezing rain, or combinations). Snow has been recorded from October to May though the majority falls from December to March. The snowiest month is February with 18.7" (47.5 cm), and the annual average is 66.8"
February 9–10, 2010 North American blizzard and out of Bradley International Airport, and Metro North operated trains on a reduced schedule on February 10. Around the local Philadelphia area, snow began during the early evening on the 9th. As warmer air moved in aloft, the snow changed to sleet and freezing rain between 3 a.m. and 6 a.m. EST on the 10th. Surface temperatures responded slower and the sleet and freezing rain changed over to rain during the morning of the 10th. Some sleet mixed in from time to time. As the low pressure system moved northeast of the region, the rain changed back to snow