Definition. Simple or arithmetic average of a range of values or quantities, computed by dividing the total of all values by the number of values. For example, the mean of 1, 2, 3, 4, and 5 is (15 Ã· 5) = 3.
Sea Temperature. 25Â°C (77Â°F) in July. The average maximum daytime temperature in Sicily in July is a hot 30Â°C (86Â°F), while the average minimum night-time temperature is a warm 22Â°C (72Â°F). On average 4 mm (0.2 inches) of rain normally falls in Sicily during July with rain falling on 1 days of the month.You can expect on average 11 hours of sunshine a day in Sicily during July.n average 4 mm (0.2 inches) of rain normally falls in Sicily during July with rain falling on 1 days of the month. You can expect on average 11 hours of sunshine a day in Sicily during July.
In Southern Italy and Sicily, including Palermo, late Spring is pleasant and warm, a wishful introduction to the Summer to come. Temperatures remain between 16 and 21 degrees Celsius (61 and 70 degrees Fahrenheit). In May, wet days are not very common in the South. Check out our real time weather forecasts.n Southern Italy and Sicily, including Palermo, late Spring is pleasant and warm, a wishful introduction to the Summer to come. Temperatures remain between 16 and 21 degrees Celsius (61 and 70 degrees Fahrenheit). In May, wet days are not very common in the South. Check out our real time weather forecasts.