Is it fall yet? 2019 was the hottest summer on record for northern hemisphere

It was definitely hot this summer in Pennsylvania. 

But turns out we weren’t alone in suffering through oppressive and dangerous heat — the whole Northern Hemisphere just sweated through its hottest summer on record, scientists from the National Oceanic and Atmospheric Administration announced Monday.

The Northern Hemisphere is home to 90% of Earth's population. And it hasn't been easy, the five hottest summers have occurred in the past five years. Just last month, the NOAA declared this July the hottest on record for the planet.

The past three months were the second-hottest on record for the planet, only coming in second to 2016, NOAA reported. This might be a pattern we continue to see, considering the average number of heat waves in 50 major American cities has tripled since the 1960s and nine of the 10 highest June-August global surface temperatures have occurred since 2009.

It was the second-hottest August on record for the planet, as Arctic sea ice melted to its second-smallest size since 2012’s record-lowest extent, the NOAA stated.  The global ocean temperature also rose to its highest on record for August.

More records across the globe

Record-warm temperatures during the three-month period were present across parts of the western coast of Alaska, Mexico, western and southern Africa, South America, Europe and Asia," NOAA said in a statement. 

• Europe, Africa and the Hawaiian region had August temperatures that ranked among their three hottest Augusts on record
• In Europe, Austria had its second-warmest summer on record, while Germany and France had their third-warmest summers. 

When asked about the record summer warmth, University of Georgia meteorologist Marshall Shepherd said that it's "more of the same. Sadly, this is not breaking news anymore but a new reality punctuated by deadly heatwaves through Europe, the U.S. and even the Arctic."

USA Today contributed to this report.