While Saturday may start of foggy, it will quickly dissolve for comfortable temperatures of between 13 and 18 degrees Celsius, with the warmest highs expected in the Rhineland region.
Later in the day clouds will take over and the western half of the country could see rainfall, the DWD predicted from its headquarters in Offenbach.
More rain is likely in the west overnight, but the east will remain mostly clear. Nighttime highs will range between 5 and 9 degrees.
Sunday morning will be foggy again, with more rain in the west and northwest regions of the country as the day continues. Highs will range between 11 and 16 degrees, with the lower Rhineland region again seeing the most pleasant temperatures, the DWD said.
On Monday the work week will begin with fog once again, with more changeable weather bringing some rain to the south of the country. Temperatures will remain mild, with highs between 10 and 15 degrees.