Edit 2. For the people downvoting me (certainly without considering what I've presented) and others, consider the phrasing here... "killer" heat, "scares" me. It's intentionally emotionally manipulative.
A downvote is too polite. The Pacific Northwest heatwave literally killed dozens of people (https://www.oregonlive.com/data/2021/07/oregons-heat-wave-de...). Pick a less stupid hill to die on; preferably one with trees and shade, and remember to drink water.