If you are not comfortable with an activity, then do not do it you are not required to participate and may do an alternate activity. It is your decision. You will be required to sign a waiver of liability before enrolling in the course. A backpackers list is provided, but we will be staying in cabins so much of the equipment is unnecessary unless you plan to camp before or after the course. Anything and everything is possible.
Thunderstorms are a certainty, and prolonged rains are possible.
It is crucial that you have quality rainwear. You must assume responsibility for your own comfort and safety . The weather can be an opportunity or an obstacle. Some of my fondest memories of this area occurred in the most vile weather. The weather conditions are so fickle, however, I am not sure of the value of the information.