RH must be considered wtih temperatures. One without the other is only half the story.
Consult a VPD table (vapor pressure deficit). They are color-coded for recommended VPD per stage of life.
Greater than 65% is a concern. 60% is fine.
The greatest probabilty of a related problems is when your lights turn off and temperatures drop. This can easily lead to condensation. If this occurs each day, you will very likely encounter mold in any grow where this is consistently happening. Ensure RH% does not spike after your lights turn off and temperatures drop.