The applet below allows you to compare basic climate information from two cities in various states in the Western U.S. Select two different cities, check or uncheck "Metric", select a parameter to plot, and then click the "Plot" button. A separate frame with a plot showing climate data for each city should appear. The data for this applet comes from the Western Regional Climate Center, hosted at the Desert Research Institute. If you have an interest in historical weather data, I suggest you check them out.