Our (almost) in-house meteorologist Jure delivers again:
Weather for Bodensee
The weather on the N side of Alps will be governed by cut-off lows wandering around in generally little gradient pressure. They are bringing cold air aloft and a moist and unstable air mass.
Wednesday and Thursday will be partly cloudy with increased cloudiness and a moderate chance of thunderstorms in the afternoon. Friday will be rather cloudy with a high chance of thunderstorms throughout the day.
There will be more sunshine on Saturday and Sunday, however there is still small probability of thunderstorms in the the afternoon.
Wind will be generally weak due to the absence of some stronger pressure gradient (perhaps some westerly gradient breeze on Friday) however wind might get stronger during the thunderstorm episodes.