You and Hancock had spent the whole day running around the Commonwealth. What should have been an easy walk from point A to point B turned into a marathon trying to get away from things that wanted to kill you. Long story short, it was exhausting.
At nightfall you found an abandoned shack to lie low in and sleep for the night, ensuring that you had the energy to keep going in the morning ... and then a thunderstorm began, a few spots on the roof even starting to leak a bit. It wasn't much of a nuisance, but it was still a pain to have to hear the loud clap of thunder every 5 or so minutes.
"Great weather to end a great day, heh..." Hancock chuckles under his breath, the sarcasm clear in his voice. At least the shack had a roof, walls, and a couch you both could sit on... but, that was pretty much it. Nothing else but dust bunnies and rotting floorboards.