This Question was asked 2 months ago but was closed 3 months ago, I'm assuming this is a bug.
@Bubbler said that it may be a rounding issue, as "the exact date and time when each event occurred ... are in correct order."
Correction: this is actually status-deferred, per JNat's answer to this bug report on MSE. Unfortunately, not much more information about this was given in his answer, but, aside from the first sentence below, this answer is (mostly) still correct.
This is status-bydesign. The Asked/Active times aren't exact, and have a bit of a weird calculation time. I believe that, because only 2 full months have passed, it counts as 2 months ago. Wait until the 1st of October and it'll say "3 months ago".
As for why the close date shows "3 months ago", but the Asked/Active shows "2 months ago", who knows? The close votes system has been regularly updated since the founding of SO, but I think the Asked/Answered has been the same since at least 2014, so probably uses some outdated / different method.