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"
Ice pellets a solid mass unless mixed with freezing rain. The METAR code for ice pellets is PL (PE before November 1998). Ice pellets are known as sleet in the United States, the official term used by the U.S. National Weather Service. However, the term sleet refers to a mixture of rain and snow in most Commonwealth countries, including Canada. Because of this, Environment Canada never uses the term "sleet", and uses the terms "ice pellets" or "wet snow" instead. Ice pellets form when a layer of above-freezing air is located between above the ground, with sub-freezing air both above and below