A massive high pressure area will be centred just over the Alps until the weekend. The air will remain very dry and further heat up from the south-west. Great late summer weather is expected once more. Summer heat is expected throughout the upcoming days; the frost line will be located around a sea level of 4800 meters. Due to the increasing temperatures, also the instability will increase from day to day. For the moment, the high air pressure will still suppress the cumuli clouds, increasing throughout the course of the days. At the weekend, however, scattered cumuli clouds may reach a threating extend toward the evening.