Last Month Was the Hottest September Since We Started Keeping Records


According to data released on Monday by NASA’s Goddard Institute for Space Studies in New York (GISS), last month was the hottest September in the last 136 years — when comprehensive temperature records started being kept.

The good news — and it’s not really good news — is that September was only the hottest by the narrowest of margins, beating out September 2014 by 0.004 degrees Celsius. In fact, the two months are in a statistical tie.

The bad news is that September’s data means that a full 11 of the last 12 months have set temperature records. And this September was nearly one degree warmer than the mean September temperature from 1951-1980.

GISS director Gavin Schmidt went out of his way to stress “that while monthly rankings are newsworthy, they are not nearly as important as long-term trends.” Not that those “long-term trends” are any less scary.

Last Month Was the Hottest September on Record