We had some heavy rains so I already covered my tomatoes with a plastic tent.
I want them to get as big as possible before it turns cool, and not split because of too much water.
Tomatoes are always a challenge where I live. I have to pull the plants and hang them in the garage, or harvest green for the tomatoes to ripen to avoid frost damage. When I harvest green I place a newspaper over them to help prevent the skins from getting tough (just like grocery store tomatoes).
By holding off as long as possible from harvesting the green tomatoes (covering with plastic, etc.), and then letting them ripen inside/cool protected area I have been able to stretch my fresh tomatoes until Thanksgiving and a little longer.