However, the jury is still out on many of these issues, as there is a lack of comprehensive studies. According to data collected by NCSL : -Twenty-one states currently have school districts (with public schools) operating on a four-day week.
In the capital Lisbon average temperatures range from 8 degrees Centigrade in January to 29 degrees Centigrade in July. But it is not unusual to get temperatures well over 30 degrees Centigrade in some summers particularly at the holiday resort of Faro in far south of Portugal.
Temperatures drop everywhere, and the number of days of rain goes up. Nevertheless, the mercury does hover between 8 and 15 Â°C in Lisbon and it only rains one out of every three days; urbanites could easily discover everything that Lisbon, Porto and their surroundings have to offer.