These pictures are from the snowstorm that hit Kansas April 5, 2007. The wheat was around twelve inches tall, standing perfect before the snow. As you can see, the snow depth is about six inches, even after melting ocurred during the snowfall.
Tonight's forecast calls for a low of 15 degrees, with Saturday to be as cold. The sun is out, the skies are clearing. Snow is beginning to melt. Without snow and cloud cover, the wheat's survival may be in jeapardy.
This field is planted to the Overly variety. I also have 2137 which is a little later in maturity than Overly, which may not be as far along and fare better through the cold spell.