Demoquin said:Maybe a -2 penalty when firing in the rain? As the arrow may slide off the string? Or the rain adding weight to the arrow making it harder to aim where the target is? Or since the string is wet .. the reverberations cause it the arrow to slip?
cmanos said:Medieval bows were strung with gut. Gut under constant tension will stretch,decreasing the power and rangeof your bow. Wet bowstrings will also stretch. Enough of either environment will render your bow useless pretty quick. And also...the wood of the bow may tend to warp if gotten wet and dried repeatedly.
But in the RAW there are no rules to account for this AFAIK
Shin Okada said:If you think "reality" of that level, weapons and armor may rust, blades may become dull or even break, warterskins may leak, and closes will be ruined by soaking up a lot of goblin blood.
Prestidigitation! for all your "the dm is enforcing boring minor activities as not being an automatic part of downtime" woes.
Simply put - the game is supposed to be fun. "Hah, you take a -2 on your attacks because your bow is still strung!" is not fun. If you think it is, go compete in the accounting olympics or something and leave honest, hard working players alone.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.