So I'm pretty sure installing Weather started the problem, but uninstalling it didn't, on its own, stop the battery drain. To do that, I had to stop Search indexing and restart the phone. Now it seems to be consuming power at a normal rate again, even with Weather reinstalled. Unless you tell it not to, iOS 16 does a lot of indexing within apps, so my guess is that it got hung up on indexing something after I installed Weather the first time.
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