Yeah I think we’re less extreme than we used to be. We have a lot more moisture in our airmasses the past 2 decades and thermodynamically that limits the heating and cooling potential of the airmass. We torch way more on mins than max temps. With the arctic warming faster that should make for shorter wavelengths and less meridional patterns too.
It may be different in dry/drought areas, but in the northeast I think temps are less extreme.