Sicily, the largest Mediterranean island, is just off the "toe" of Italy's "boot."

Sicily and its surrounding small islands have some highly active volcanoes. Mount Etna is the largest active volcano in Europe and still casts black ash over the island with its ever-present eruptions. It currently stands 3,329 metres (10,922 ft) high, though this varies with summit eruptions; the mountain is 21 m (69 ft) lower now than it was in 1981. It is the highest mountain in Italy south of the Alps. Etna covers an area of 1,190 km2 (459 sq mi) with a basal circumference of 140 km (87 mi). This makes it by far the largest of the three active volcanoes in Italy, being about two and a half times the height of the next largest, Mount Vesuvius. In Greek Mythology, the deadly monster Typhon was trapped under the mountain by Zeus, the god of the sky. Mount Etna is widely regarded as a cultural symbol and icon of Sicily.

Snow falls in abundance above 900–1000 meters, but stronger cold waves can easily carry it in the hills and even in coastal cities, especially in the northern coast of island. The summit of Mount Etna is usually snow capped from October to May.

On the other hand, especially in the summer it is not unusual that there is the sirocco, the wind from the Sahara. Rainfall is scarce, and water proves deficient in some provinces where water crisis can happen sometimes.

More Info: en.m.wikipedia.org