This happened to me last winter too - I managed to forget about it and now it's back!
Whenever the temp is below about 35 degrees, the wiper blades seem to "bow" outward away from the windshield, contacting the windshield only at the top and bottom of each blade, leaving me with zero visibility right in front of my face. It's almost as if the rubber is shrinking on the frame and pulling away from the glass. Happens on the rear blade too. No amount of ice/snow/removal or getting out of the car to press the blade flat to the glass improves this in any way. Nor does using the heated wiper button or the defroster. When the temperature goes back up, the blades are flat against the glass again and clear as can be during your average rainfall or mist.
Needless to say, this is very dangerous. Once last year, I had to stop on the Jersey Turnpike with trucks whizzing by me on the driver's side and manually clean the windshield with paper towel and glass cleaner before I could keep driving.
The blades are two years old, OEM.
Anyone else have this problem? Will new blades fix this?