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.
1 Lisbon, Portugal is at 38 43'N, 9 9'W, 95 m (312 ft). 2  See map. 3  Lisbon has a hot mediterranean/ dry-summer subtropical climate (K ppen-Geiger classification: Csa) that is mild with moderate seasonality. During summer average high temperatures are 26.7Â°C (80.1Â°F) and average low temperatures are 16.9Â°C (62.4Â°F). 2  Come autumn/ fall temperatures decrease achieving average highs of 22.2Â°C (72Â°F) during the day and lows of 14.3Â°C (57.7Â°F) generally shortly after sunrise.