Imo it’s not going anywhere. Ever.With the way it has flared back up and lots of new cases, I haven't heard anyone say anything about "Herd Immunity". I saw several people including Fauci say that once we got herd immunity, the virus would slow down. It hasn't happened so far.
Pretty clear that weather plays a huge factor on cases. When it is pleasant outside cases go down. When temps get extreme either hot or cold, cases go up.