You can set it up for you city and any others you want to frequently check the weather in. It stays in the system tray (that thingy down on the lower right) and pops up with a double click. You can view tons of interesting weather stuff, like your local forecast, current conditions, hourly forecasts for the next two days, etc. AND, it is ALL FREE!! This guy just likes being able to check the weather quickly, didn't like the other programs out there that did this, and didn't like how inefficient it was to browse the Weather Channel website. So, he wrote this little program and gives it out free. Really, no strings whatsoever attached.
And, it really is a nifty and useful little program. You should check it out. I highly recommend it (as if you couldn't tell)!!