At high altitudes (over 2500m), warm air masses will be moving in today; lowers altitudes will however receive cool, polar air. This combination cool air at lower levels, mild air above and both of them humid will bring us heavy cloud and occasional precipitation.
The nord wind keeps bringing dense clouds on Friday and Saturday. We even have to contend with a few thunderstorms.
On Sunday, the clouds will clear and the sun will be able to break through!