As mentioned above, plus the addition of the winds sweeping across the plains... err, fields.. 50 mph winds with no storm in sight are not uncommon, any time of the year.. I would OFTEN be rushing out to slide them shut, and back open... the greatest advantage to them here would be in late July and August when it can get to 108 degrees, the rest of the year they would only be a pain in my neck... Using OAV seems to take care of my mite problems so well that any other type of control has ( so far ) been unnecessary.