Prior to the 1970s US autumn temperatures were much warmer, but according to National Geographic trees are changing color later due to global warming
“fall is getting warmer as a result of climate change, jeopardizing these beloved colors. Last year, Earth saw its 4th warmest October since record keeping began 113 years ago. This year is shaping up to be no different, following the planet’s hottest recorded summer. And the Northeast, famous for its vibrant fall foliage, is warming faster than the rest of North America.”
How climate change disrupts fall foliage
“In 1947, the State of Maine suffered its largest forest fire disaster in modern history. The state experienced over 90 consecutive days of record breaking high temperatures and drought. By mid-October, many small wildfires started and spread out of control. Statewide, these fires burned over 220,000 acres, burned 1000 homes, left 2,500 people homeless and 16 people dead.”
The 1947 Fires: Forest Protection: Maine Forest Service: Maine ACF
Rutgers University Climate Lab :: Global Snow Lab
Rutgers University Climate Lab :: Global Snow Lab
Peak colors by October 10, 1937
05 Oct 1937, 2 – The Bennington Evening Banner at Newspapers.com
Peak colors by October 10, 2022
11 Sep 2022, B4 – The Burlington Free Press at Newspapers.com