I ran across a couple of interesting climate web sites this week that you might find useful. The first is a web site which shows diurnal climatologies of a variety of weather factors for each month of the year for a selection of cities across the US. “Diurnal” means it shows how these variables change over the course of a day and night, so you can see temperatures rise during the day and fall at night, for example. You can find this at http://www.diurnal.microclimates.org/.
The second site is from Louisiana State University and creates charts which allow you to compare monthly values of temperature and precipitation for different years in the past with their long-term averages using bar graphs. You can find that at http://charts.srcc.lsu.edu/mly.