How about:
1) pack your gaiters
2) don't forget your snowshoes and shovel

Many years ago I went on a trip in the Black Hills in April. It was 80 degrees the first day and we went in in shorts. By noon the next day it was cooling off and clouding over. By 6 pm there was 2" snow on the ground and we post holed it out the next day in 12+" of snow and blizzard conditions. Had to shovel the car out and a good portion of the way back to the highway. Spent two more days in a hotel in Rapid City as the interstate was closed because of the storm <img src="/forums/images/graemlins/mad.gif" alt="" />