The best times to visit Arco are during the spring (April to May) and autumn (September to October) months, when the weather is mild and pleasant for outdoor activities.
Spring in Arco brings comfortable temperatures, typically ranging from 10°C to 20°C. This is a great time to explore the nearby Craters of the Moon National Monument and Preserve, as the landscape starts to green up and wildflowers begin to bloom. It's also less crowded than the summer months, allowing for a more relaxed experience.
Autumn offers similar comfortable temperatures, usually between 10°C and 20°C, with crisp air and often clear skies. The fall foliage, particularly in the surrounding mountain areas, can be quite scenic. This season is ideal for hiking, photography, and visiting local attractions without the peak summer crowds.
While summer (June to August) is also popular, temperatures can be quite warm, often exceeding 30°C, which might not be as comfortable for extensive outdoor exploration.