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.
Weather Lowdown. March sees Lisbon become warmer and dryer than previous months. The average temperature goes up a full 2 degrees and now reaches up to around 18Â°C (that's about 64Â°F), while the average low also climbs 2 degrees to around 10Â°C (about 50Â°F) in the evenings.