Repair exterior window seal in rain

[Christine49]

Hi everyone, I'm new here and this is my first trailer. I have a 2018 Dutchman bunkhouse and have lived in bit for 3yrs. I just had my trailer washed, waxed and UV treated the roof 2 weeks before the rain started and unfortunately I was told and shown that I need to re seal my windows. How am I supposed to do that in the rain? And is there something that will hold up until spring?