If you love great weather apps you'll love this one. Dark Sky was started by Adam Grossman & Jack Turner on Kickstarter (an online funding platform for creative projects) as a weather app that predicts the weather.
I've been using it for about a week now and so far it hasn't really rained here in NYC, but tonight it's telling me in about 20 minutes we're going to get some rain. Which is awesome, in that there are many times I need to run out for a quick second but I don't know if I need my rain boots or not. This is the perfect app for those of us who need to know is it really going to rain today.
Head over to Darkskyyapp.com and check out the app, it's comes ready for iPhone/iPad.