Italy has a Mediterranean climate and enjoys four seasons, though they are not extreme seasons. Mountainous regions do experience harsher winters (and regular snow in winter) than regions at sea level.
The temperature in all areas of Italy typically ranges between 40°F and 85°F throughout the year. Average annual humidity is around 70%. Mountainous regions and any area above sea level may experience cooler temperatures and lower humidity. Italy receives little rainfall per year, most regions receive less than 30 inches of rain per year.
Italy is a sunny country, receiving over 2,350 hours of sunlight per year and enjoying nearly six-and-a-half hours of cloud-free daily sunlight on average.
As in any country, weather depends on your region, but generally Italy enjoys a warm, stable climate, with little temperature fluctuation from season to season.
Italian Winter: December to February
Italian Summer: May to September