If you've been surprised by warmer temperatures that make this Fall feel less Fall-like, you are not alone. And if you have been enjoying the warmer weather this Fall, get used to it because this could become the new normal for Fall across the lower United States!

The normally crisp air that comes this time of the year is giving way to a warming trend. The average temperature across the Lower 48 this fall is more than 7 degrees Fahrenheit above normal as of November 15. The warmest fall on record in 2016 was 4.04 degrees warmer than average. This fall will likely finish cooler than 7 degrees above normal with storms on the way this week, but it has still been the warmest start to fall on record.

It’s been warm even when looking at specific cities and not the country as a whole. Hundreds of locales spanning every region of the continental US are experiencing one of the warmest falls to date, data from the Southeast Regional Climate Center shows.

“It’s not the fall weather of past generations,” said Shel Winkley, a meteorologist with the non-profit research group Climate Central. “Fall is not gone completely, but I think that this fall especially shows us that it is a shrinking season.”

Fall has warmed by 2.5 degrees Fahrenheit on average since 1970 in the Lower 48, according to data from Climate Central. It’s happening faster in the Southwest and the Rockies, but every region of the country has warmed because of climate change.

And it's not just Fall being impacted. Spring too. Summer warmth is starting earlier during spring months and lasting later into the start of fall — eating away at both seasons, according to Winkley.

It just might be that you no longer need to figure out how to hide a winter jacket underneath that Halloween costume!