We just found a link to weather at various places on the mountain. I guess the good? news is that the weather on the summit isn't any worse than we were expecting...but I guess that isn't hard to do when we were basically expecting the worst! The surprise is that the first few days are colder than any of us were thinking. Looks like we start the trek in weather around 60F near 7800' and then it drops to the 40s for our first night at 9500'....and just gets colder from there.
Link is here:
Click the little buttons on the left near the date to go between "metric" (elevation in meters and temperature in Celsius) and "imperial" (elevation in feet and temperature in Fahrenheit).