Saronno, Italy experiences a continental climate with distinct seasonal variations. Winters are cold and often frosty, with temperatures ranging from -9°C to 15°C on average in January and December. Spring brings mild temperatures, gradually warming up from April's 7°C average high to May's 11°C. Summers are warm but not hot, with temperatures averaging around 18°C from June to August, while autumns are cool again, with highs rarely exceeding 21°C in October and November.