Best Time to Visit Rocky Mountain National Park
Planning a trip to Rocky Mountain National Park in Colorado? This data-driven guide breaks down every month of the year so you can pick the perfect time to visit. With 265,807 acres, 355 trails, and 4.35 million annual visitors, timing your trip right can mean the difference between fighting crowds and having trails to yourself.
Best Months to Visit Rocky Mountain National Park
Based on historical weather data, June and July and August and September and October deliver the best visiting conditions at Rocky Mountain National Park. These months combine comfortable temperatures, low precipitation, and the best trail accessibility. Plan your trip during these months for the best chance of clear skies and ideal hiking conditions.
Month-by-Month Breakdown
| Month | High (°F) | Low (°F) | Precip (in) | Rainy Days | Sunny Days | Crowds | Verdict |
|---|---|---|---|---|---|---|---|
| January | 36° | 16° | 0.5" | 6 | 18 | Low | Good |
| February | 37° | 16° | 0.5" | 6 | 17 | Low | Good |
| March | 42° | 21° | 1" | 9 | 15 | Moderate | Good |
| April | 49° | 26° | 1.5" | 10 | 13 | Moderate | Great |
| May | 58° | 34° | 1.8" | 12 | 13 | Moderate | Great |
| June | 68° | 41° | 1.5" | 10 | 16 | Very High | Peak |
| July | 75° | 46° | 1.8" | 12 | 16 | Very High | Peak |
| August | 73° | 45° | 1.7" | 11 | 17 | Very High | Peak |
| September | 66° | 38° | 1.2" | 8 | 18 | Moderate to High | Peak |
| October | 54° | 29° | 0.9" | 6 | 19 | Moderate to High | Peak |
| November | 42° | 21° | 0.7" | 6 | 17 | Low | Good |
| December | 35° | 15° | 0.5" | 6 | 17 | Low | Good |
January
GoodJanuary is a viable time to visit Rocky Mountain National Park though you may encounter some weather challenges. Temperatures range from 16°F to 36°F with about 6 rainy days and 0.5 inches of precipitation. Some trails or roads may have seasonal limitations, so check conditions before your trip.
Off-season with minimal crowds. Some facilities may be closed but solitude is plentiful.
February
GoodFebruary is a viable time to visit Rocky Mountain National Park though you may encounter some weather challenges. Temperatures range from 16°F to 37°F with about 6 rainy days and 0.5 inches of precipitation. Some trails or roads may have seasonal limitations, so check conditions before your trip.
Off-season with minimal crowds. Some facilities may be closed but solitude is plentiful.
March
GoodMarch is a viable time to visit Rocky Mountain National Park though you may encounter some weather challenges. Temperatures range from 21°F to 42°F with about 9 rainy days and 1 inches of precipitation. Some trails or roads may have seasonal limitations, so check conditions before your trip.
Shoulder season with fewer visitors. A good balance of pleasant weather and lighter crowds.
April
GreatApril offers pleasant conditions at Rocky Mountain National Park with comfortable temperatures between 26°F and 49°F. With 13 sunny days and only 1.5 inches of precipitation, you will enjoy good trail conditions and often lighter crowds than the peak months.
Shoulder season with fewer visitors. A good balance of pleasant weather and lighter crowds.
May
GreatMay offers pleasant conditions at Rocky Mountain National Park with comfortable temperatures between 34°F and 58°F. With 13 sunny days and only 1.8 inches of precipitation, you will enjoy good trail conditions and often lighter crowds than the peak months.
Shoulder season with fewer visitors. A good balance of pleasant weather and lighter crowds.
June
PeakJune is one of the best months to visit Rocky Mountain National Park with average highs of 68°F and only 1.5 inches of precipitation. Expect 16 sunny days and temperatures ranging from 41°F to 68°F. Trail conditions are typically excellent, making this an ideal time for hiking, sightseeing, and experiencing the park at its finest.
Peak season with large crowds, long waits, and full campgrounds. Book well in advance.
July
PeakJuly is one of the best months to visit Rocky Mountain National Park with average highs of 75°F and only 1.8 inches of precipitation. Expect 16 sunny days and temperatures ranging from 46°F to 75°F. Trail conditions are typically excellent, making this an ideal time for hiking, sightseeing, and experiencing the park at its finest.
Peak season with large crowds, long waits, and full campgrounds. Book well in advance.
August
PeakAugust is one of the best months to visit Rocky Mountain National Park with average highs of 73°F and only 1.7 inches of precipitation. Expect 17 sunny days and temperatures ranging from 45°F to 73°F. Trail conditions are typically excellent, making this an ideal time for hiking, sightseeing, and experiencing the park at its finest.
Peak season with large crowds, long waits, and full campgrounds. Book well in advance.
September
PeakSeptember is one of the best months to visit Rocky Mountain National Park with average highs of 66°F and only 1.2 inches of precipitation. Expect 18 sunny days and temperatures ranging from 38°F to 66°F. Trail conditions are typically excellent, making this an ideal time for hiking, sightseeing, and experiencing the park at its finest.
Popular shoulder-season month. Trails are busy on weekends but manageable on weekdays.
October
PeakOctober is one of the best months to visit Rocky Mountain National Park with average highs of 54°F and only 0.9 inches of precipitation. Expect 19 sunny days and temperatures ranging from 29°F to 54°F. Trail conditions are typically excellent, making this an ideal time for hiking, sightseeing, and experiencing the park at its finest.
Popular shoulder-season month. Trails are busy on weekends but manageable on weekdays.
November
GoodNovember is a viable time to visit Rocky Mountain National Park though you may encounter some weather challenges. Temperatures range from 21°F to 42°F with about 6 rainy days and 0.7 inches of precipitation. Some trails or roads may have seasonal limitations, so check conditions before your trip.
Off-season with minimal crowds. Some facilities may be closed but solitude is plentiful.
December
GoodDecember is a viable time to visit Rocky Mountain National Park though you may encounter some weather challenges. Temperatures range from 15°F to 35°F with about 6 rainy days and 0.5 inches of precipitation. Some trails or roads may have seasonal limitations, so check conditions before your trip.
Off-season with minimal crowds. Some facilities may be closed but solitude is plentiful.
When to Avoid
Peak Holiday Weekends
Memorial Day weekend, July 4th, and Labor Day weekend bring the largest crowds of the year to Rocky Mountain National Park. Expect full parking lots by mid-morning, overcrowded trailheads, and fully booked campgrounds. If you must visit during these weekends, arrive before 8 AM, have backup trail options ready, and book campgrounds or lodging at least 6 months in advance.
Money-Saving Tips
Visit in Shoulder Season (Spring or Fall)
Spring and fall offer pleasant weather at most national parks with significantly lower lodging costs compared to peak summer months. Hotels and vacation rentals near Rocky Mountain National Parkcan be 30–50% cheaper in April, May, September, and October compared to June through August.
Buy the America the Beautiful Pass
The America the Beautiful Annual Pass costs $80 and grants unlimited access to all 400+ national parks, forests, and federal recreation areas for a full year. With Rocky Mountain National Park's entrance fee at $30 per vehicle, the pass pays for itself in just a few visits. It covers all passengers in a single vehicle.
Camp Instead of Staying at Hotels
Campgrounds inside or near Rocky Mountain National Parktypically cost $15–35 per night compared to $150+ for nearby hotels. The park offers in-park camping options. Book campgrounds through Recreation.gov as soon as reservations open (typically 6 months in advance) since popular sites fill quickly, especially for summer dates.
Visit on Free Entrance Days
The National Park Service offers 5–6 free entrance days each year, including Martin Luther King Jr. Day, the first day of National Park Week (April), the anniversary of the Great American Outdoors Act (August), National Public Lands Day (September), and Veterans Day (November). Mark these dates on your calendar to save on entrance fees.
Frequently Asked Questions
What is the best month to visit Rocky Mountain National Park?
The best months to visit Rocky Mountain National Park are June, July, August, September, October. These months offer the most pleasant weather conditions, the best trail accessibility, and ideal temperatures for outdoor activities. September typically provides the best overall weather with 18 sunny days.
When is Rocky Mountain National Park least crowded?
Rocky Mountain National Park tends to be least crowded during January and February (winter quiet season) and November (between fall foliage and holidays). Avoid holiday weekends such as Memorial Day, July 4th, and Labor Day for shorter trail waits and better campsite availability. Visiting on weekdays during any season will also reduce your exposure to crowds.
What is the weather like at Rocky Mountain National Park?
Weather at Rocky Mountain National Park varies significantly by season. Summer highs average 75°F while winter highs average 36°F. The driest months are typically December and the wettest is July. Always check current conditions before visiting as mountain weather can change rapidly.
Is Rocky Mountain National Park open year-round?
Rocky Mountain National Park is open year-round, though some roads and facilities may close seasonally due to weather conditions. Winter months may bring road closures, limited facilities, and trail restrictions. Always check the official NPS website for current operating status and road conditions before planning your visit.
Continue Planning Your Trip
Rocky Mountain National Park Guide
Trails, highlights, visitor tips, and everything you need to know.
Weather & Climate
Full 12-month weather data, charts, and packing recommendations.
Hotels Near Rocky Mountain National Park
Nearby lodging from campgrounds and cabins to lodges and hotels.