Temperature. Summer temperatures in Iraq average 100 degrees Fahrenheit during the day, and 80 degrees Fahrenheit at night. The warm summer air is also accompanied by low humidity levels, ranging from 5 to 15 percent during the month of July, and a low dew point.emperature. Summer temperatures in Iraq average 100 degrees Fahrenheit during the day, and 80 degrees Fahrenheit at night. The warm summer air is also accompanied by low humidity levels, ranging from 5 to 15 percent during the month of July, and a low dew point.