Blueberries stressed by heat

The heat we had in August stressed the blueberry plants and right now we are waiting for cooler weather and rain.  We normally are open until October 10th each year.  We don't know when the next harvest will be ready.  With the heat the berries did not size, nor ripen so we'll have to wait and see what the plants do in the next 2-3 weeks.  We should have 2 more pickings but we're just not sure.   The Bode's