NATIONAL PARK SERVICE · alerts
Heat Alert - Temperatures May Be Higher Than Forecast
August 7, 2026 · Source: National Park Service
Actual temperatures in the park may be up to 6℉ (3 ℃) higher than forecasts provided by the National Weather Service (NWS). Temperatures in rocky, exposed areas may be up to 10℉ (6 ℃) hotter than the actual temperature. Please plan accordingly, stay hydrated, limit strenuous activity during the hottest parts of the day, and be prepared for extreme heat conditions.
Read the official NPS sourceWhat Travelers Need to Know
Review the park’s current conditions before departure and again on arrival. Follow posted restrictions and adjust your itinerary to the affected areas.
This is an archived notice. Confirm its current status on the official conditions page before traveling.
Traveler guidance by State & Nation Staff Writer.