June
Snowmelt and waterfallsWaterfalls run strongly, but snow is still possible high up. High water can limit some backcountry campsites and swimming areas.
830,987 average visits in June
Choose your summer month
Choose for snowmelt, warmer hiking weather or late-summer wildlife. Each month has a different tradeoff.
July
The warmest monthPlan exposed hikes around frequent afternoon thunderstorms. Summer haze is possible, and popular stops stay busy.
922,896 average visits in July
August
Bison-rut seasonLook for bison in Lamar and Hayden valleys. Weather is generally warm and dry, with occasional storms or wildfire haze.
820,128 average visits in August
Get oriented for summer
Choose a part of the park for each day, rather than treating every entrance as interchangeable.
- Mapped road corridor
- 1 · Old Faithful
- 2 · Canyon Junction
- 3 · Mammoth Hot Springs
- 4 · West Entrance
- 5 · North Entrance
- 6 · South Entrance
- 7 · East Entrance
- 8 · Northeast Entrance
- Park boundary
Summer highlights
Pair a geyser-basin visit with canyon views, then leave room for wildlife stops.
Old Faithful and boardwalks
Check eruption predictions at the visitor center or in the NPS app. Walk the Upper Geyser Basin on designated trails and boardwalks.
Grand Canyon of the Yellowstone
Use Canyon Village as the starting point for Lower and Upper Falls overlooks and rim trails.
Late-summer bison
Late July and August are rut season. Look in Lamar and Hayden valleys. Stay at least 25 yards from bison and 100 yards from bears, wolves and cougars.
Getting around in summer
Summer is a driving trip with long distances. Road conditions still need a separate check.
Plan by area
Yellowstone has five entrances and several hours of driving between them. Match each day to a realistic part of the park.
Avoid peak hours
NPS suggests entering before 7 a.m. or after noon, and avoiding main attractions during the 10 a.m. to 4 p.m. peak.
Where to stay in summer
Choose the part of Yellowstone you want to wake up in, then reserve early.
Old Faithful area
Lodge rooms and cabins put you beside the Upper Geyser Basin. Check each property's operating season and book through the official concessioner.
Canyon Village
Canyon Lodge and Cabins is near the canyon overlooks and trails. Use it for a canyon-focused overnight base.
Camping Reserve a designated campground for summer. Most campsites book far ahead; roadside pullouts and parking areas are not overnight camping alternatives.
Yellowstone summer crowds
The highlighted whole months average 858,004 recreation visits per month. July is the annual peak at 922,896.
Summer months highlightedJune through August
LowestLowModerateHighPeakAverage month: 369,320
Yellowstone summer temperatures
NOAA 1991-2020 averages at Yellowstone Park, Mammoth, WY. Elevation matters. Summer nights can be cold, and afternoon thunderstorms are common.
Summer months highlightedJune through August
Cooler Hotter
Jan
High31°F
Low12°F
Feb
High34°F
Low12°F
Mar
High42°F
Low19°F
Apr
High50°F
Low26°F
May
High60°F
Low35°F
Jun
High70°F
Low42°F
Jul
High81°F
Low48°F
Aug
High80°F
Low47°F
Sep
High69°F
Low39°F
Oct
High54°F
Low29°F
Nov
High39°F
Low19°F
Dec
High30°F
Low12°F
Questions about Yellowstone summer
Quick answers to the practical questions below.
Which summer month is best for Yellowstone?
June suits waterfalls and snowmelt scenery, with snow and high-water limits in some areas. July is the warmest month but brings frequent afternoon thunderstorms. August is generally warm and dry and falls within bison-rut season. All three are busy summer months.
What is Yellowstone weather like in summer?
Days are often warm, but nights are cool and can drop below freezing at higher elevations. Afternoon thunderstorms are common. Pack layers and rain gear rather than only summer clothing.
Can you drive through Yellowstone in summer?
Summer is the normal road-trip season, but check the entrance and road map before travel. Five entrances and long driving distances make route planning important; a seasonal pattern does not guarantee a particular road is accessible.
Where should you stay in Yellowstone in summer?
Old Faithful is a base for geyser-basin exploring, while Canyon Village suits the canyon overlooks and trails. Reserve early and confirm each property's operating dates.
Can you camp without a reservation in Yellowstone in summer?
Reserve ahead for summer camping. The NPS campground page requires advance reservations outside the winter first-come exception at Mammoth. You cannot camp in pullouts or parking areas.
How we built this page.
An independent guide using official data. Not affiliated with or endorsed by the National Park Service.
- Official guidance
- NPS and the relevant operators. The linked official pages support the access, facilities and rules described here. Confirm details before traveling.
- Crowd context
- 2021–2025 monthly averages. NPS recreation visits describe normal seasonal demand, not trail congestion, parking availability or unique visitors.
- Schedules and conditions
- Planning patterns, not live status. Seasonal information describes the normal pattern or explicitly dated source schedule. Current conditions are handled separately. The official source is the place to confirm today’s access.
Topic sources and data details
NPS Weather supplies the summer thunderstorm, cold-night and layered-clothing guidance. NPS Park Roads supplies the driving scale and route-check requirement. The Old Faithful, Safety, Lodging and Camping pages supply the activities and overnight decisions. This guide covers June through August; it does not guarantee every high-elevation trail or service is available throughout that window.
The month comparison and activity choices follow the independently reviewed seasonal source packet. Monthly recreation visits are full-calendar-month 2021–2025 averages.
Temperatures are NOAA 1991-2020 normals at Yellowstone Park, Mammoth, WY; Mammoth is Yellowstone HQ at 6,194 ft. The northern-range districts (Lamar Valley, Tower) read close to these numbers. Old Faithful (7,365 ft) and Norris (7,484 ft) typically run 5-8°F colder; Yellowstone Lake (7,733 ft) and high passes colder still. Lake Yellowstone has its own NOAA station (USC00485345) at 7,892 ft if you need higher-elevation numbers.
Seasonal highlights mark the editorial month window, not guaranteed access or travel-date weather.
Operational source check: October 21, 2026. Design and emphasized source review: 2026-10-21. A design review does not refresh every underlying record.