Understanding Climate

But the Montreal Protocol is working: the hole in our planet’s UV-blocking ozone layer was smaller than those of the 1990s and 2000s.

Northern Hemisphere land areas were record warm, and La Niña left its imprint on global precipitation patterns.

Atmospheric rivers and a powerful Nor'easter brought significant precipitation to the U.S. in October. East of the Rockies, most of the country was warmer than average.

It was the fifth-warmest September on record, and the East Asian summer monsoon was especially wet.

Warmth was widespread across the contiguous United States, while precipitation was a patchwork, with most of the drier-than-average regions in the already-parched West.

The October 2021 climate outlook favors a warmer-than-average month for the central and eastern United States and wetter-than-average conditions for the Plains.

It was the sixth-warmest August on record for the globe. It's very likely that the year will wind up among the 10 warmest years on record.

August was warmer than average, capping off a summer that tied for warmest on record.

Large parts of the country show no tip in the odds toward either a cold or warm September temperature outcome. The rainfall associated with Hurricane Ida's remnants is likely to be enough on its own to lead to a wetter-than-average September for areas in its path.

International report confirms 2020 was among three warmest years on record.