The planet's streak of heat milestones continued into October, which came in as the second-warmest such month on record, according to NASA.
The top three warmest Octobers on record worldwide have each occurred in the past three years, NASA reported on Tuesday, with October 2015 ranking as the warmest of them.
Even though this October didn't beat last year's level of heat, it will still help ensure that 2016 will eclipse 2015 to become the warmest year on record since instrument records began in 1880.
Image: UNIVERSITY OF MAINE
