The best time to go to Fort Sumner is during the spring (April to May) and autumn (September to October) months.These periods offer pleasant weather with moderate temperatures, making it comfortable to explore the outdoor attractions. The summer months can be quite hot, often reaching high temperatures, which might be less enjoyable for outdoor activities. Winter, while generally mild, can bring colder temperatures and occasional snowfall, potentially limiting some outdoor plans.For travellers interested in local history and outdoor exploration, spring and autumn provide ideal conditions to visit sites like the Fort Sumner Historic Site/Bosque Redondo Memorial and Billy the Kid's Gravesite without the discomfort of extreme heat.