Every seed has an optimum temperature for germination. With Petunias it'a 80 degrees. That does not mean that they won't germinate at varying temperatures, just that that is the optimum temperature. What your seed package is telling you is that Forget-me-nots like to be germinated cool. The temperature is just a guideline. That cool temperature is why, when they reseed themselves, they come up in the very early spring.

I wouldn't start them now. It is too hot for them to germinate properly. Wait until your weather cools

Ah thank you. That was very helpful :)

Especially considering we are just exiting a drought, lol.