July
Separate lakes from high trailsSnow often stays in the mountains until mid-July. Choose a lake or valley outing unless the higher route fits your equipment and conditions.
732,380 average visits in July
Choose your summer month
Choose your month around the outings and conditions that matter most.
August
Start with the mountain forecastWarm days, cool nights and afternoon thundershowers remain normal summer patterns. Keep exposed hikes flexible.
672,439 average visits in August
Things to do in summer
Choose a lower-elevation or high-country outing for the actual conditions.
Jenny and String Lakes
Choose a lakeside outing that fits your group and the actual trail conditions.
Jackson Lake
Pair shore views with a nearby stop rather than trying to cover the whole park in one day.
Mountain canyon hikes
Keep Cascade Canyon and higher outings conditional on trail reports, lingering snow and the storm forecast.
Get oriented for summer
Separate the Teton Park Road lake area from the outer highway corridor.
- Mapped road corridor
- 1 · Moose Entrance
- 2 · Signal Mountain
- 3 · Moran Entrance
- 4 · Flagg Ranch
- Park boundary
Getting around in summer
Check the seasonal access and equipment decisions before fixing the route.
Check the mountain forecast
Afternoon thunderstorms are common. Start with the forecast and keep an alternative to an exposed route.
Respect remaining snow
A summer road or boat journey does not establish safe high-country trail conditions. Check the specific hike.
Where to stay in summer
Choose a lake-area lodge within its operating season, then confirm the roads needed for your outings.
Signal Mountain Lodge
A seasonal lake-area base, normally early May to mid-October. Confirm dates directly.
Jackson Lake Lodge
A seasonal option normally mid-May to early October. Compare the property calendar with your travel dates.
Camping Reserve the campground separately from any lodge or activity booking. Check the individual campground’s operating calendar.
Grand Teton summer crowds
The highlighted whole months average 702,410 recreation visits per month. July is the annual peak at 732,380.
Summer months highlightedJuly and August
LowestLowModerateHighPeakAverage month: 292,291
Grand Teton summer temperatures
NOAA 1991-2020 averages at Moran 5WNW HCN, WY (preview station; full station review pending). A valley station does not describe mountain trail snow or afternoon storm risk.
Summer months highlightedJuly and August
Cooler Hotter
Jan
High24°F
Low1°F
Feb
High30°F
Low4°F
Mar
High39°F
Low12°F
Apr
High46°F
Low21°F
May
High56°F
Low31°F
Jun
High67°F
Low37°F
Jul
High77°F
Low42°F
Aug
High76°F
Low40°F
Sep
High66°F
Low34°F
Oct
High51°F
Low25°F
Nov
High35°F
Low14°F
Dec
High24°F
Low4°F
Questions about Grand Teton summer
Quick answers to the practical questions below.
Is Grand Teton worth visiting in summer?
Grand Teton in summer is a lake-and-hiking trip with warm days and cool nights. July can still have mountain snow; August outings need the same preparation for afternoon thunderstorms.
Which summer month should I choose?
July: Separate lakes from high trails. August: Start with the mountain forecast.
What should I check before a summer outing?
A summer road or boat journey does not establish safe high-country trail conditions. Check the specific hike.
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 seasonal, activity and overnight guidance supports the normal patterns and named choices on this page. Check the linked official pages for current operation and booking details.
Month choices describe the reviewed planning window. Monthly recreation visits are full-calendar-month 2021–2025 averages, including any month partly inside the window.
Temperatures are NOAA 1991-2020 normals at Moran 5WNW HCN, WY; Moran 5WNW HCN sits inside the park at ~6,805 ft, on the valley floor near Jackson Lake. Its numbers fit the valley, where most visitors spend their time. Higher in the Teton Range it is colder and snowier. NPS notes snow and frost are possible any month. This is a preview station, pending full station review.
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.