Yes, chicks are tolerant of the temps once they hatch and 1-3 degrees won't hurt anything. They are running on their own metabolism and can handle mild temperature changes. Some move newly hatched and fluffed chicks right into the brooder where there is a 90-95 degree temperature without any worries. Although most wait until all have hatched (good idea) and give them a day to dry out/fluff in the incubator/hatcher.
Best starting temp in the broader is 95 degrees for the first week, 90 degrees the second week, 85 the third, 80 the forth... then should be getting in their feathers and good to go.
Cheers!