I held a paper route for about 4 months when I was 13. It rained every...single...day. No, that's not true, one day it snowed. Then I quit the paper route and started delivering milk instead. The weather was no better but milk bottles, unlike newspapers, are waterproof.
The day I hated most of all was Friday, because in addition to the daily paper, everyone subscribed to the local weekly. I never did weigh the bag but I recall I had to complete about 1/3 of the route before I could balance on my bike again.