Grand Teton is fully open in August which means all services and roads are open. The weather is really nice to enjoy all the outdoor activities you can do at this park!
Grand Teton National Park weather in August is the best! Expect daytime highs around 80 and lows around 40. It will still be cold in the morning and evenings so be sure to pack a fleece jacket.
You never know when you’ll see wildlife at Grand Teton. Please be a responsible wildlife observer by maintaining a safe distance of at least 100 yards from wolves and bear, and 25 yards from all other wildlife.