I agree with
@LitterBug, at this point is all speculation.
According to the CDC there are many other
corona type viruses, SARS, MERS and the common cold. Each one has its own characteristics. The other corona's do go inactive in the heat. No one knows if this one will or not. We will just have to wait & see.
Just looking at a map of the cases, more of the outbreaks "appear" to be in the higher latitudes. There could be many reasons for this, one reason could be that heat slows the spread.
My 2¢, it's far too early to speculate about FF20, let's wait & see. Hopefully I'll see you in Malvern OH July 16-19, 2020.
Stay calm, wash your hands, don't hord and carry on