The best time to visit Waukegan is during the late spring (May to early June) and early autumn (September to October) when the weather is pleasant and outdoor activities are enjoyable.During these periods, temperatures are generally mild, ranging from the mid-60s to low 70s Fahrenheit, making it comfortable for exploring the Waukegan Lakefront, including the Waukegan Harbor and Illinois Beach State Park. The humidity is also lower than in the summer months, providing a more agreeable experience for walks along the beach or visiting outdoor attractions.Families traveling with children will find these times particularly appealing for outdoor recreation. The Waukegan Municipal Beach is less crowded than during peak summer, offering more space for kids to play and build sandcastles. Additionally, many local events and festivals, such as the ArtWauk, often take place in the spring and fall, providing entertainment for all ages.For couples looking for a relaxed getaway, the shoulder seasons offer a more tranquil atmosphere. You can enjoy strolls through the historic downtown area, explore local art galleries, or dine at waterfront restaurants without the summer rush.