Due to its geographical location and elevation, summers in Yellowstone are pleasant, with average daytime temperatures hovering around 70ºF and cool nighttime temperatures dropping into the 50s.
This makes the summertime ideal for sleeping outside. Temperatures can be significantly cooler at higher elevations, even dropping below freezing during the summer.
The shoulder months have milder temperatures and lesser crowds. Spring temperatures can be unpredictable between April and May. Daytime temperature in late spring averages in the low 50s and nighttime in the high 20s.
By early autumn, the crowds have dissipated with the start of the school term. Yet temperatures are still warm enough to visit most parts of Yellowstone. Daytime temperature averages in the low 60s and down to low 30s at night.
Average temperature and precipitation from 1991 to 2020
Best time for camping
The best time to camp in Yellowstone National Park is in September. The average daytime highs are in the high 60s and nighttime lows in the high 30s.
Summer temperatures still linger in September and most of the park’s campgrounds are still open. Crowds have thinned with the arrival of the start of the school year, making it easier to get reservations to some of the park’s coveted campgrounds.
In comparison, during the summer reservations should be made well in advance as campgrounds fill up quickly. Yellowstone closes most of its campgrounds for the season by the end of September with the exception of Mammoth, which is open year-round.
Read More : Best Campgrounds in Yellowstone National Park
Best time for hiking
The best time for hiking in Yellowstone National Park is in July and August.
By this time, the weather has warmed enough to make all trails in the park accessible. Hikes at some of the park’s higher elevations, such as Mt. Washburn, often remain snow-covered into July. Hiking these higher peaks during other times of the year can be risky due to extreme weather
And, while temperatures during the summer can sometimes reach 80ºF in the park’s lower elevation areas, highs and lows are typically mild, making for comfortable hiking. Just keep in mind that it is best to start early in the morning to avoid crowds and late afternoon thunderstorms.
Read More : Best Hiking Trails in Yellowstone National Park
Best time to avoid crowds
May and September are the best times to avoid crowds in Yellowstone. These two months make up around 10% and 16% of Yellowstone’s annual visitors.
After Labor Day, crowds thin considerably in the park and don’t return to their peak levels until after Memorial Day.
During May and September, the weather is warm enough to be comfortable. And most of the park’s facilities are open during these months, allowing you to experience its best attractions. You do still need to be on the lookout for sudden changes in temperature, so make sure to layer and have rain gear with you wherever you go.
While winter offers the best time to avoid crowds at the park, extreme weather makes this an attractive time for mainly diehard outdoor enthusiasts.
Best time to see wildlife
The best time to see wildlife in Yellowstone National Park is early spring and winter.
It really depends on what you want to see.
Early spring and fall are the best times to see bears as they’ll be foraging for hibernation during the fall and emerging from their winter slumber in the spring.
Wintertime is the best season to find wolves and bighorn sheep while other animals, such as Elk and bison, can best be spotted during the summer and fall months as they make their migrations to lower elevations for the winter.
Whichever time you choose, make sure to follow park regulations and maintain a safe distance while observing these animals.
Best time for biking
The best time for biking in Yellowstone National Park is fall and spring.
Though cycling is allowed year-round, the best season begins in early November when the park closes the roads to traffic in preparation for the coming snows. Once the snow arrives, the cycling ends.
Biking opens up again in early April when the roads clear, allowing for traffic-free cycling until about mid-May. This gives cyclists access to some 250 miles of park roads without having to share it with traffic.
Make sure the roads are clear before heading out. Check the park’s Website for road closing information.
Best time for fishing
The best time for fishing in Yellowstone National Park is July to August.
This is when the insect population is at its highest, so fish are especially active. It’s an excellent time for fly fishing on all of the park’s rivers.
Mid Summer is also the most comfortable time to fish, with warmer weather and warmer waters, making backcountry fishing a great option.
The top places to fish in the park at this time are Slough Creek, Soda Butte, and Lamar, for both their fish populations and amazing scenery. Make sure you have a valid permit.
Best time for winter sports
The best time for snow sports in Yellowstone National Park is January.
This is because the park records an annual average of 35″ of snow during the month, which is the highest of any month during the year.
This makes it an excellent time for snowmobiling, cross country skiing, snowshoeing, and other winter sports. There are numerous outfitters around the park for renting equipment or booking guided tours.
If you plan on visiting the park during the winter, make sure to come prepared with winter clothing as winter weather can be extreme in Yellowstone.
Seasons in Yellowstone National Park
- Average Highs : 70 to 80ºF / 22 to 27ºC
- Average Lows : 42 to 47ºF / 6 to 9ºC
With average highs in the 60s and 70s, the summer months are the best times for outdoor activities such as hiking and visiting popular locations such as The Grand Canyon of Yellowstone or Old Faithful.
It also happens to be the busiest time of year at the park with more than 2 million visitors annually.
Summer is the park’s high season. This means that the park’s many campgrounds and other accommodations will fill up quickly, so make reservations well in advance. Also, plan to visit the park’s most popular attractions at off times, such as early in the morning, to avoid crowds.
Read More : What Should I Pack for Summer Camping?
- Average Highs : 39 to 68ºF / 4 to 20ºC
- Average Lows : 20 to 30ºF / -8 to 3ºC
Fall is the ideal time of the year to visit Yellowstone. Crowds at the park thin significantly after Labor Day; however, the weather is still warm enough to still comfortably enjoy the park.
Temperatures range from 30ºF to 60ºF in the daytime with nighttime temperatures running from the teens to single digits, or lower at times. It’s also a more affordable time to visit the park as you can enjoy reduced rates at the park’s campgrounds and other accommodations.
Fall is also a great time to see certain wildlife in action, including bears, elk, and bison, as they prepare for the coming winter. Fall does mean unpredictable weather as temperatures can drop below freezing, so prepare accordingly.
- Average Highs : 29 to 34ºF / -2 to 2ºC
- Average Lows : 10 to 13ºF / -13 to 11ºC
Winters in Yellowstone can be quite harsh with daytime temperatures ranging from zero to 20ºC and nighttime temperatures routinely dropping below zero. The park receives tremendous amounts of snowfall and temperatures routinely drop well below freezing.
If you plan to visit Yellowstone during winter, make sure to be well-stocked with emergency equipment in case you become stranded. Despite the hazards of winter weather, there are plenty of good reasons to visit the park in winter. Some wildlife is easier to spot during the colder months and the park offers many opportunities to experience winter sports.
Read More : What Should I Pack for Winter Camping?
- Average Highs : 40 to 61ºF / 5 to 16ºC
- Average Lows : 26 to 42ºF / -4 to 6ºC
Spring isn’t a great time to visit Yellowstone. Weather can be wildly unpredictable with temperatures ranging between near 0 and the mid-50s. The warmer temperatures also cause snowmelt, which turns much of the park’s roads and trails into mud bogs.
Still, there are plenty of reasons to visit the park in the spring. It’s a great time to see baby animals as the park’s animals begin to emerge from winter. It’s also an off-peak season, so you can enjoy the park without the crowds.
If you plan to visit the park in the spring, make sure to prepare for a variety of weather conditions.
Andrew Dodson is an avid camper who enjoys the great outdoors with his wife and two-year-old son. He resides in Colorado, where you can often find him enjoying hikes with a toddler strapped to his back and mini goldendoodle Percy nearby.