Indiana in February

May through September gives you Indiana's best weather, but timing matters for what you want to do. May brings the Indianapolis 500, which transforms the entire city for two weeks. Hotels book up months ahead, and prices triple, but the energy is electric if you're into motorsports. Summer means festivals every weekend — the Indiana State Fair in August, various county fairs, and outdoor concerts. Temperatures hit the 80s regularly, perfect for lake activities up north or hiking in Brown County State Park. Just pack bug spray; mosquitoes love those humid evenings. September delivers ideal conditions — warm days, cool nights, and fall colors starting to show in southern Indiana. October brings peak foliage to Brown County, though crowds follow. Winter gets cold and gray, but indoor attractions like the Children's Museum of Indianapolis and various basketball games keep things interesting.