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.
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).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.
Palermo, Sicily Climate & Temperature. 1  Palermo, Sicily, Italy is at 387'N, 1319'E, 105 m (344 ft). 2  Palermo, Sicily has a hot mediterranean/ dry-summer subtropical climate (Kppen-Geiger classification: Csa) that is mild with moderate seasonality. 3  The annual average temperature is 17.9 degrees Celsius (64.2 degrees Fahrenheit).