App that generates a map of the closest coffee shops based on the weather

Title says it all. While I do believe that this app is yet another example of why climate change is bad and why we should be more environmentally friendly, it would also be nice to know exactly where to go and get a hot cup of joe to keep you warm.<br><br>I haven't seen an app that does this yet, but Wikipedia hasn't been very helpful and I'm no web developer. What should I do?