OK, not quite like 1816 but nevertheless.
I have only lived in my current place for 3 years so don't have a firsthand knowledge of how the weather has been over the longer term however it appears that this has been a significantly below average spring and summer (winter had relatively few frosts and none that were properly cold).
A few examples;
Spring was very late and our grass didn't really start to grow until well into June and it still hasn't caught up with where it has been in previous years.
A big show along the road, which was scheduled for the last Saturday in September, has been cancelled already as the field they hold it in contains barley and they reckon there is now no-chance it will be combinable before October. In fact, yesterday I drove 65miles up the east coast from Inverness (through the best farmland in this part of the world, much of it near sea level) and only passed 2 fields that had been combined. Some cereal fields were still nearly as green as grass.
This year the last snow still visible on the hill behind out house (at an altitude of only 620m) didn't melt until the 2nd July.
This morning I picked some red currants but there are still quite a few that are not ripe yet. We did our elderflower cordial making at the end of July/start of August but if I wanted more I know there are still some flowers on the trees. Who knows when we will get elderberries.
I hear that up until a few weeks ago some of the farmers in the islands still had their cattle indoors and were having to feed them.
Once again today it is not going to get about about 14 degrees and the sun just a mythical thing that people talk about after they have come back from holidays.
Makes me glad that although we like to produce what food we can we are not dependent on it and if something fails we can just pop into a shop and buy food.