I just read a couple nites ago that queens stop laying when it either gets up to 92 or 98 degrees.( Cant remember which one) This is also when the bees have a lot of foragers turn into water gatherers so they can cool the hive
I have 9 hives now and they drink a 5 gal chicken waterer of water every 4 days. They are also drinking alot of syrup. The book says that they will take syrup when its hot because of the water in it
The book is "The Hive and the Honeybee".