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.
Source: Instituto de Meteorologia. Lisbon has on average 117 precipitation (including drizzle) days a year (above 0.1 mm), ranging from 2 in July to 15 in January. The average annual precipitation is 774 mm (30 inches), ranging from 4.2 mm (0.16 inch) in July to 127.6 mm (5 inch) in November.ource: Instituto de Meteorologia. Lisbon has on average 117 precipitation (including drizzle) days a year (above 0.1 mm), ranging from 2 in July to 15 in January. The average annual precipitation is 774 mm (30 inches), ranging from 4.2 mm (0.16 inch) in July to 127.6 mm (5 inch) in November.