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"
Hail . GR is derived from the French word grêle. Smaller-sized hail, as well as snow pellets, use the coding of GS, which is short for the French word grésil. Terminal velocity of hail, or the speed at which hail is falling when it strikes the ground, varies. It is estimated that a hailstone of in diameter falls at a rate of , while stones the size of in diameter fall at a rate of . Hailstone velocity is dependent on the size of the stone, friction with air it is falling through, the motion of wind it is falling through,