Who Cares About Dew Point?
New weather station owners expect to see temperature and humidity on their console. They understand rain and wind numbers, and why the stats on those variables matter. But some of you may be wondering a bit about that little “DEW” label above the HUM button on your Vantage Pro2 Console/Receiver or Vantage Vue Console. DEW is, of course, shorthand for dew point. You may have wondered why this variable is important enough to share a button with relative humidity. The answer is because it is a very important tool for understanding the air’s moisture content. We’ve talked about dew point before in the E-News, but it is such a useful little weather variable, we thought we might offer a quick refresher. We’re going to assume we all understand what relative humidity is. (Quick! It’s a ratio of the amount of water vapor in the air relative to how much the air, at a specific temperature and pressure, can hold before it is saturated.) Dew point, on the other hand, is a temperature. It is the tem
