We see a lot of temperatures in the mid 90's for days on end from mid-June through July in Sonoma County. Are you asking if this rose blooms right through the hottest part of summer? The answer is, no, not much. Are you asking about bloom fade? No, not much. Certainly the plant handles the heat just fine and hasn't shown the slightest inclination to burned canes. But most of my roses slow down during that time period. We don't have the water resources to really flood them after the spring flush, and as a result, they cannot be fertilized to induce that bloom. By mid-August, though, everything picks up again. This rose does form a small bloomer, canes about 5 feet long, blooming on laterals. It will eventually require some careful thought about training.