Like many other people, I believe that adding weather to the mix would really improve gameplay, but I'd like to consider exactly how weather would effect the game. Here is my list of the hypothetical effects of weather.
~Rain~
*Raindrops fall from the sky.
*Background is tinted blue.
*Tools left out in the open will slowly deteriorate.
*Food and drinks left out in the open are destroyed almost instantly.
*Trees don't need to be watered, but they need twice as much petting.
~Snow~
*Snowflakes fall from the sky.
*Background is tinted white.
*You slowly lose energy due to cold weather, unless you eat something hearty.
*Snowballs.
This list will be updated whenever. Updates will be written in bold. Feel free to make suggestions!