Just thought I would throw this out here in case some have not happened upon something of this nature.
Welcome to Weather Underground : Weather Underground
Is in my opinion an excellent single "all in one" source for most weather needs.
Just type in your location and the tool pulls up lots of info.
What is nice is you can look at individual station data trends in the past as well as compare them between each other. This button is located right at the top of the "weather at a glance" heading to the right.
Also, it has a very nice real time monitoring tool which I use for storm tracking and the like as it will show all kinds of statistics you might be interested and is excellent for use when you are tracking severe weather events (such as tornadoes),
You can do multiple satellite views (VIS and IR4) and you can even access various weather cams in the areas that have them.
Here is an example of Dallas, TX.
WunderMap Interactive Radar & Weather Stations : Weather Underground
What I like to do is use this as a means to see if there are any off stations showing bias in a given area. You can see the surrounding stations and get an idea of what stations are more likely to be correct in their display of the temps (ie seeing a station reporting 104 when it is surrounded by near by stations showing 97-99.) As I said, you can also look at individual stations and review their daily, weekly, and yearly data records as well as see that stations all time highs and lows.
Anyway, its a great tool, so I thought I would pass it on for those who may not know about it and like to dabble a bit in the details of the weather.