Periods of high humidity can affect the copy quality of your printer, fax, or copier. Not only can it dampen your opened paper supplies, but it can also have an effect on some components in the equipment. Symptoms are usually paper jams and light or blurry copies and prints.
A good tip is to keep opened packages of paper in their original packaging and re tape the outer protective layer, or keep unwrapped paper in a tupperware type container to keep the moisture out.
If print quality is an issue especially at the beginning of use each the day, most machines have a drum dry/cleaning mode cycle. This can usually be selected and entered for a couple minute cycle which can really help clean things up in the machine.