Is there no end to the genius of RSS? Not only do all my fabulous blogs wait patiently for me, and matching ads for the piece of furniture I am currently hunting for on Craigslist are delivered right to me, but now I can check the weather in the same place!
Websites like the WeatherBug and The Weather Channel supply RSS Feeds; you supply your location, and then add it to your RSS Reader of choice (I like both Google Reader and Bloglines). Oh and San Francisco? It's rain, rain, and more rain. And then it might rain.