Yellowstone is the crown jewel of US national parks—and Jackson, just south of Grand Teton, is the perfect family base with lodging, restaurants and zero-elevation gain. June through September offer predictable weather and maximum wildlife visibility, though June is cooler and less crowded than July–August.
Arrive in Jackson, check into lodge on town square.
Drive scenic loop around Jenny Lake (15 miles, multiple viewpoints); short walk on Jenny Lake Trail (1 mile).
Dinner at Snake River Grill or Blue Lion (upscale but welcoming), ice cream, early rest.
Drive 1 hour to Yellowstone south entrance, head to Old Faithful; watch eruption (15–90min intervals).
Walk Upper Geyser Basin boardwalks (easy, 1.5 miles combined); see fountain Paint Pot and other geysers.
Return to Jackson, casual dinner at Dornan's Chuckwagon, stargazing.
Drive north through park to Midway Geyser Basin; boardwalk around Grand Prismatic Spring (0.8 miles, otherworldly colours).
Continue to Norris Geyser Basin; explore boardwalks (2–3 miles total, easy, steam vents and geothermal features).
Return to Jackson, dinner at Calico Italian Restaurant.
Early breakfast, drive to Lamar Valley (1 hour north); slow drive looking for bison, elk, pronghorn, wolves.
Picnic lunch, continue scenic loop, stop at overlooks; return via Oxbow Bend for moose spotting.
Relaxed evening in Jackson, pool time, dinner at Persephone Bakery or takeout.
Drive to Colter Bay visitor centre in Grand Teton; explore Indian Arts Museum (indoor, 45min, educational).
Easy lakeshore walk (1 mile) with mountain reflection views; beach play if weather warm.
Last souvenir shopping on Jackson town square, dinner at Nora's Fish Creek Inn.
Last walk around Jackson town square, coffee.
Check out, drive toward airport or extend stay.