Yes! The idea that microinverters fail in high heat is an old myth the has been debunked repeatedly. Robco installed several thousands of microinverters in 2017, 2018, and 2019 — the three hottest years ever recorded in Las Vegas. In the last seven years,the company has installed over 50,000 microinverters. They are deployed all over Las Vegas, Henderson, Pahrump, and Mesquite.
The older systems have been through multiple punishing summers. If these were going to fail in high heat, you would see that mentioned in reviews. It is not mentioned because they do not fail because of high heat. The internal operating temperature on Enphase microinverters is 185 degrees. Your roof does get hot, but it is not 185 degrees up there. Extreme heat poses no issues for microinverters.