About Kelly Warm Spring
Kelly Warm Spring offers a mellow soak in gently heated waters, sitting at a comfortable 81°F. The spring’s broad pool invites you to swim rather than just soak, all while framed by sweeping views of the Grand Tetons towering nearby. Its marshy shoreline adds a natural, untouched feel to the setting, blending open water with wetland grasses.
Getting There
Located just south of Yellowstone and east of the Grand Tetons, Kelly Warm Spring is easily reached by car with no hiking involved. You’ll find ample parking right at the site, so unloading swim gear and settling in is hassle-free. The spring’s accessible location makes it ideal for quick visits any time of year.
What to Expect
The water temperature stays pleasantly warm but won’t scorch, perfect for a relaxed swim or cool dip. The spring’s size allows for movement and floating, offering a spacious alternative to tighter hot springs. Expect a calm atmosphere with mostly locals and visitors enjoying the open-air setting. Facilities aren’t developed—there are no changing rooms or restrooms nearby.
Tips for Visitors
Plan your visit year-round since the consistent warmth keeps the spring inviting through all seasons. Bring towels, swimwear, and insect repellent because the marshy edges can attract bugs. There’s no fee or formal rules, and clothing is unofficially optional—respect others’ comfort while enjoying the expansive, natural waters of one of Wyoming’s inviting hot springs and swimming holes.
