Hi @adventure735! Thanks for joining us yesterday!
Great question. This seven-gallon Reliance Aqua-Tainer is the one that David uses and should do a great job holding up to high temps -- he uses it year round in California!
There's other great info about water-related gear on our emergency preparedness Shopping List, under the Water section, if you'd like to check that out as well.
Thanks again for joining us and let us know if you have any other questions!