Yes, but realize that your calcs are using the “Ideal Gas” law...and as we know, no gas is “ideal” [especially when released under the bed-covers, according to my wife!].
Using several differential equations, we might be able to verify a change closer to...say..1 psi (12.5 v 11.5)?
Sorry, just arguing from a Patriots fan perspective.
:-)
At those temperatures and pressures, air behaves as an ideal gas. Assuming no change in volume, the most useful equation is the Gay-Lussac Law (P1T1=P2T2). A change of 2 psi cannot be explained by the temperatures that day.