You could use the members map at the top of the page and look around your location, but there's no search function.
You can look up a member and see where they are located by the "Location" tab if available, and then search around the map in...
I once tried flying in the snow at temperatures somewaht above what you quoted, and my hands were too cold to feel confident in my ability to control the drone. I wore glove liners with conductive fingertips, but that was not enough. Perhaps...
You need to log in from time to time (not sure of how often) to avoid being restricted in height and distance. This happened to me once in a remote part of Idaho.