CPAN has several Weather related modules which can fetch from various places. Since you want weather for Tupper Lake, New York, I figure that US weather services will be fine, so things such as Geo::WeatherNOAA will work, although if not there are several alternatives using different sources.

To figure things like sunrise and sunset (or any of the twilights), I've found Astro::Sunrise quite helpful. Once you have the current time, compare it to the times you get from that module to see where you are in the day.

Now you just have to put the pieces together. Good luck :)