There's some debate over which weather service is the most reliable. This is generally due to the fact that some weather services might be more reliable in New York while others are more reliable in California. So which one is most accurate for your area?
Go to http://www.forecastadvisor.com/ to find out. Type in your zip code and it'll show you which source you can trust the most. It keeps track of how accurate each major weather services' forecasts were in the past so you know who to trust in the future.
Now you can feel a little more in control and a lot more informed.
Also, www.howmuchwillitsnow.com is a pretty awesome site if you find yourself asking the question, "how much will it snow?"