Some scripts for displaying a weather forecast on your conky.
They use Accuweather, Weather Underground, National Weather Service (USA) and Weather.com.
They all rely on the same principle: download a bunch of pages, parse them and isolate the necessary info for conky to find.
There is something for everyone: from the minimalistic (1c), to the humongous, larger than life, «I’m a meteorologist» aspect (4).
Check out Conky Companion as well: a graphical app which can help you create your own conkyrc files easily.