If you're looking forward to lots of outings with your partner, check out these details about year-round temperatures in Weissensee: The hottest months are usually July and August with an average temp of 59°F, while the coldest months are January and February with an average of 32°F. The rainiest months in Weissensee are November, August, May, and June, with each month seeing an average of 10 inches of rainfall.