I believe the research on Covid-19 is incomplete at this point, but certainly 80F will not inactivate the virus as it multiplies in the body at fevers over 101F. Earlier coronaviruses were reported as being inactivated at temperatures of 130F for extended periods, and 165-170F for shorter times. (WHO report).
Here is some anecdotal evidence for you - in South Texas, the high temperatures last week ranged from 90-100F on most days, but the spread of the virus is accelerating here as elsewhere.
The fatty shell on the virus is, however, the reason handwashing is so effective in helping limit spread. Soap plus friction breaks down the capsule, and water washes away the protein.
I hope this helps your analysis of the current pandemic.
Sue