The NOAA has issued a report claiming that October 2019 was the second warmest October on record – for the entire planet.
"The global land and ocean surface temperature departure from average for October 2019 was the second highest for the month of October in the 140-year NOAA global temperature dataset record, which dates back to 1880. The year-to-date temperature for 2019 was also the second warmest on record for the January–October period." - NOAA
According to NOAA, the October globally averaged land surface temperature was also the second highest for October in the 140-year record at 2.63°F above the 20th century average of 48.7°F. Alaska, Northern Canada, north-central Russia, Eastern Europe, the Middle East, and Western Australia were hit the hardest, where temperatures were at least 3.6°F or higher than average.
"The October temperature across global land and ocean surfaces was 1.76°F above the 20th century average of 57.1°F and the second highest October temperature on record. This value was only 0.11°F shy of tying the record warm October set in 2015." - NOAA
NOAA reports that for the fourth consecutive October, the Antarctic sea ice extent was below average. October 2019 Antarctic sea ice extent was 6.89 million square miles, giving way to the 10th smallest October Antarctic sea ice extent on record. This value is 100,000 square miles, or 1.38%, below the 1981–2010 average.
"On 18 October 2019, the daily sea ice extent was 1.19 million square miles below average — the largest daily departure from average on record." - NOAA