U.S. Climate in September: Unusually Warm and Wet

Source: National Climatic Data Center Carbon emissions in the United States may be down, as announced by the Energy Information Administration yesterday, but temperatures are still running high. Last month was the sixth warmest September in the United States, in a record stretching back 119 years. The map above, from the National Climatic Data Center, shows how temperatures departed from the long-term average. (You can create your own maps at NCDC here.) Here's how precipitation shaped up in September: