If the RH outside is 77% as shown here synced to the internet/weather as shown below
And you have a cold air intake, as shown below
That is set to run anytime the temp reaches 2 degrees higher than 60
And this is set to 60 as a safe gard for when the out side RH drops.
Then theoriticallly this hydrometer should always register at 60?
Couldn it be that its resting on top of this reflector?