What a difference no clouds make at night

I was kvetching yesterday about the heat and humidity. Well, the cloud cover last night was minimal (as opposed to when I was trying to watch the Perseids), and the outside temperature dipped below the inside of the cabin around dusk. I opened up the windows to let the cool breeze into the cabin, and went to sleep. While some mosquitoes and other small insects did find their way into the cabin through the holes in the screen windows, this was the only downside, and I woke up in a cabin much cooler (and not too much more humid) than when I went to sleep. Indeed, I woke up a little chilly.