In Texas, summer heat can push shingles past 100 degrees causing them to crack...

https://www.scribd.com/document/1013566234/Case-Study-When-Hail-Breaks-the-Shingle-Mat-and-Standing-Water-Finishes-the-Job-A-Texas-Roof-Story-210615

In Texas, summer heat can push shingles past 100 degrees causing them to crack and curl over time. Come spring, hailstorms beat roofs up with chunks of ice that can lead to leaks if you don't fix them fast