Potsdam Summer Festival 2019 July 11, 2019 1:00 pm - July 13, 2019 10:00 pm The 52nd Annual Potsdam Summer Festival will be held Thursday, July 11 – Saturday, July 13. Summerfest events are held all over Potsdam! Add to my calendar image/svg+xmlOutlook Calendar Google Calendar Yahoo! Calendar image/svg+xmlApple LogoiCal Calendar