For the entire 2009 spring and summer, central North America was cooler than normal. I certainly noticed it. I also noticed when September was suddenly extremely warm. It felt like July. I went swimming on Labour Day weekend, which is pretty much unprecedented in Prairie weather.
I noticed that September was warm, and expected this to show up on the latest NCDC report, but I didn’t expect it to look like this:
Yikes. That’s a lot of big red dots. I noticed the change in the trend from a cool summer to a hot September, but I didn’t expect that it would show up quite so dramatically. Weather is like this, I guess.
It was the second warmest September on record. Really, looking at these NCDC reports is just a way to tide myself over until the GISS data comes out. One month is impossible to make judgments from. But when month after month is close to the top of the charts, the evidence builds that this is not just a strange weather fluke – it’s a long-term trend.