Yeast dough has a tendency to be temperamental and inconsistent in its behavior. Being aware of the factors that may affect the dough will help you handle its moods.
Occasionally, you may find that your dough is stiffer or softer than usual, and that the amount of rising time it needs increases or decreases substantially. (A stiff dough takes longer to rise than a softer one.) Both the type of flour and the amount of humidity in the air play a role in determining the amount of water your dough may need, so don’t hesitate to add up to ¼ cup more if you feel the dough is too stiff. And if the dough is too soft and sticky, add more flour.