Come prepared for anything and everything. Your day pack should essential be backed for any kind of condition as well as protection for an overnight in the worst case scenario since it takes hours to help someone and you don't want to be sitting out in the open while you wait. April is in what we call the shoulder seasons (spring and fall) and are usually when we have the most rescues. This is because people start off in 40+F weather at the base thinking it is like that at the top and get caught in 10-20F (or worst) weather at the top with higher winds making it feel colder. Most wear tennis shoes and cotton which are the enemy up here. And some of the largest snow storms I have experienced up here have occured in either April/May and October/November. Also take caution coming up any trail because the excessive snow is causing avalanches and sluff off in locations that have not seen activity in neary 30-40 years. If you read the avalanche report today, you'll see what I mean. Bottom line, be careful, be prepared, and be aware.
Staff Meteorologist, KMWN