Reduce humidity damage to clothing with chemical absorbents or through proper ventilation. Use silica gel packets or other moisture-absorbing materials if you plan to tightly close all closet doors and trunks. The other option is to leave closet doors open and use fans to improve air circulation. Also separate clothes within each closet to allow airflow between items.
Humid air can also build up in walls, which can become soggy over time, and may even attract mold and mildew. Interior and exterior paint can also bubble and peel under extended humid conditions.
To minimize such problems, boost wall insulation and consider vapor-retardant paints. Also caulk or weather strip all gaps and cracks around the walls, baseboards, doors and windows. According to MSU researchers, such sealing work can minimize moisture problems in walls.
Finally, attics can get hot and uncomfortably damp in humid weather. Be sure to properly ventilate the attic. If the attic does not have a vapor barrier (which may not be a necessity in many cases), it should have one square foot of venting per 150 square feet of attic, according to MSU research. For areas with vapor barriers, one foot of venting per 300 square feet of attic is acceptable.
Humid weather can cause a variety of home problems and hazards, but they can all be prevented or remedied with some care and diligence.