Global warming?

It appears that this winter is cold and snowy in many places, particularly in the western USA.

It feels like this winter has been cooler than normal in Arizona. According to Weather.com, the average high temperature for January in Tempe is 68° F, yet daily temperatures have reached or exceeded that figure on only 6 out of the first 28 days of this current month, and four of those days were the first four days of this month. The forecast high temperatures for the last three days of January will be in the high 50's or low 60's, so this means that high temperatures on 25 out of the last 27 days of January 2008 are below normal for Tempe.

This is just an observation ...