On Sunday, the high pressure influence will decrease and the air stratification will become increasingly unstable. Initially, however, the sun should be able to shine for longer and it will be oppressively humid in places. During the course of the day, increasingly thick cumulus clouds will form from the mountains, increasing the risk of thunderstorms, which may even be severe. There is even a threat of heavy rain, hail and very strong gusts of wind. An Atlantic front will cross over towards Monday. This will initially bring more unsettled weather on Monday itself, making it more prone to showers, and temperatures will be slightly lower than recently. Behind this front, however, the air pressure will rise again towards the middle of the week and the sun will gain the upper hand in the sky. Temperatures will also rise again and it will become more summery again.