There's a huge surge of hot/humid air approaching. I suspect it'll be good for a vagrant bird or two, and whatever is still migrating this time of year (terns, swifts, uber-late shorebirds/warblers, immature gulls?)...
I've noted a number of rare tern records in June / early July in the Great Lakes, and wonder if this is the type of weather that could help make it happen. Wouldn't put it past another rare heron or two to arrive as well! (I'm hoping for Black-bellied Whistle Ducks)..
Here's a look at a few upcoming maps:
Beyond the birds, I suspect this will be primo-weather for butterfly and dragonfly migration. I've haven't really had the chance to poke around in June for a NUMBER of years now, but there's a chance I'll get a bit of spare time during this surge. Should be fun!