We sure know what you're talking about here in Central Illinois. We will also be lucky to get a 1/3 of last year.
Checked one of our yards yesterday and just got back from another one today. Really discouraging. If it hadn't been for the early comb sections I managed to get this year we wouldn't have much. Some of our double brood box hives never even needed a super and even some of those are lighter now than I'm really comfortable with. For example, we have 5 supers divided up between 4 strong double brood hives a little apart from the rest of the hives in one yard. We'll be lucky to get a total of 2 supers of capped honey from the 5. This yard is located in a truck patch with lots of apple, peach, and apricot trees with blackberries, strawberries, and other produce. It's next to a lake with woods, fields, weeds, and wildflowers within easy foraging range. Has been an excellent yard in the past. Too much rain, cool weather, and wind. Thankfully at present we have lots of healthy bees in hives that range from fair to heavy amounts of pollen and little to plenty of nectar. The queens are slowing down on laying. Still have a higher number of drones in some colonies than I would expect under the circumstances. Hopefully they know something I don't. Still have time for fall foraging. Main concern now is to get what we have through the winter.