The best time to visit Del Norte, Colorado, is during the summer months, from June to August, for outdoor activities, or in the fall, from September to early October, for cooler temperatures and fall colors.For those looking to enjoy the full range of outdoor adventures, summer offers warm, sunny days superb for hiking, mountain biking, and fishing in the Rio Grande. The average daytime temperatures are comfortable, typically in the 70s Fahrenheit, making it ideal for exploring the surrounding San Juan Mountains and the Rio Grande National Forest.Fall is an excellent choice for visitors who prefer cooler weather and scenic drives. The aspens and cottonwoods in the surrounding areas turn brilliant shades of gold and red, providing stunning photographic opportunities.