There are temp specs for the Dot in its spec data. Just keep the Dot below middle of floor-to-ceiling height, no direct sun on it, and well ventilated. Should work fine unless you live in Death Valley.
I am boring too, hardly looked at the Prime Day ad, and only bought from Google their Home and Chromecast bundle deal. It's my second Home (since I have lots of Alexa gadgets, incl. big Echo.)