The best time to visit Winthrop is during the summer months, from June to August, for warm weather activities, or in the winter, from December to February, for snow sports.Summer in Winthrop brings reliably sunny and warm weather, with average temperatures in the 70s and 80s Fahrenheit. This is ideal for outdoor activities like hiking, mountain biking, horseback riding, and fly fishing in the Methow River. The town itself is fully operational, with all shops, restaurants, and attractions open, making it great for families looking for an active and engaging vacation.Winter transforms Winthrop into a snowy wonderland, attracting visitors primarily for cross-country skiing. The Methow Valley boasts one of the largest groomed cross-country ski trail systems in North America, offering hundreds of kilometers of trails suitable for all skill levels.