Is my CPU cooler broken?

I am experiencing very high temperatures when idle. I have cleaned out my case of dust, flipped the cooler's radiator to the correct position (tubes on bottom), and my CPU cores are still getting very hot under no load. Below are averages taken 10 minutes into turning on PC and running idle (Core Temp open only)

Core #0 - 92 C - Load: 0% Core #1 - 96 C - Load: 1% Core #2 - 92 C - Load: 2% Core #3 - 93 C - Load: 0% Core #4 - 93 C - Load: 1% Core #5 - 92 C - Load: 0%

I feel like I should only be reaching these temps when under a full load.

Any advice is appreciated.