If you're planning a trip from Denver to Rocky Mountain National Park, it's important to know the best time to visit. The park is open year-round, but the weather can vary greatly depending on the season. Generally, the best months to visit Rocky Mountain National Park are from June to September. During these months, the weather is mild and the park is bustling with activity. The summer months offer the best chance for hiking, camping, and exploring the park's many trails and scenic vistas. The wildflowers are also in bloom during this time, adding a splash of color to the already stunning landscape. However, it's important to note that the summer months are also the busiest time of year in Rocky Mountain National Park. If you're looking for a more peaceful visit, consider visiting during the shoulder seasons of May or October. The weather can be a bit cooler, but the crowds are much smaller, making it easier to explore the park's many attractions without feeling crowded. While not everything may be accessible in May, you can still experience much of the park during this month. You might even have the chance to see the elusive bighorn sheep! If you're a winter sports enthusiast, consider visiting Rocky Mountain National Park during the winter months. The park is a popular destination for skiing, snowshoeing, and other winter activities. However, be prepared for cold temperatures and plenty of snow. No matter what time of year you visit, Rocky Mountain National Park is a must-see destination for anyone visiting from Denver.