The first thing we should address, given contemporary sensitivities, is if this is even an appropriate term.
The sports teams of my undergrad alma mater, Arkansas State University, used to carry the nickname “Indians.” ASU started out as an A&M (Agriculture and Mechanical) school and thus were known for some time as the “Aggies.” They changed to “Warriors” in 1930, then to “Indians” the next year. They remained the Indians until 2008. They then changed to the Red Wolves.
Nominally one could argue that the name was not insensitive. However, the mascot was known as Jumpin’ Joe (see figure), usually portrayed as a hideous visual parody of a native Amerindian. I was always uncomfortable with this, but as a young man finding my way in the world – and coping in the South as a native Yankee – I never made much fuss about it.
So, Arkansas State became the Red Wolves. The Red Wolf is an endangered species, and – if ever seen – is usually in the southeast US. It’s a mixed beige-reddish/copper colored subspecies of the gray wolf , and also evidently quite modern in its evolution, having a genealogy that is only about 50-400,000 years; so not that different than humans.
Interesting that the most successful college sports team in the hometown of my youth (Milwaukee), is Marquette University, and was also called the “Warriors” for decades; definitely an allusion to a supposed war-like nature of the American Native. Marquette, is a smallish Jesuit run school. Yes successful: they won the NCAA Basketball Championship as the “Warriors” in 1977. In time, the nickname was deemed a negative portrayal of native Amerindian culture. Marquette’s sports teams have been called the Golden Eagles since 1995.
The Golden Eagle is a very successful species. It’s one of the most widespread birds of prey across all of the northern hemisphere. So that was probably a good choice by Marquette. Pick success.
And let’s not forget the team that can be called “That team formerly known as the Washington Redskins.” Or maybe the official name is just the “Washington Football Team.” Or something like that. Not following sports much lately.
In any case, Indian Summer is a wonderful time. Typically, it refers to a period of pleasant weather late in the year. It could also be a wonderful period of time late in one’s life. I may be having my own Indian Summer right now, in early retirement, and before Old Man Time tatters and frays my neurons and sinews even further.
The term might have even originated with “Indians”, as some oral traditions tell of how American Natives explained the phenomenon of this weather to new arrivals: fear not, an unexpectedly nice time of year will arrive. You can hunt, and sometimes even fetch a late harvest of berries. Northern Europeans would likely have expected no such thing after a blast of Jack Frost and wintery chills.
The thing about Indian Summer is you don’t actually know if, or when, it is going to arrive. It’s kind of a “bonus summer.” An end of year “bonanza.” A happy surprise.
The US Weather Service prefers to apply the term to a stretch of summery weather that occurs in the autumn after a killing freeze. Annuals have all perished. Budding has ceased. Perennials are into dormancy. Deciduous trees are shutting down. It’s best if there is even some snow; a warning of the deep dark nights and short days to follow.
And then: bam! Sun. Warmth. Hope you didn’t put those shorts away, or that sunscreen.
Colorado is Not currently in Indian Summer, although one could be forgiven for thinking that. The temperatures are back into the 80s – and might even soon touch 90. Yet last week we had three days of freezing temperatures and even several inches of snow in most places.
But it’s not autumn yet. Fall has yet to fall.
It’s just one of those things. One of those crazy Colorado things.  Even though we were over 100 degrees just a few days before the snow and freezing temperature. It’s not Indian Summer, yet. I hope we get one again this year.
Anyhow, should we call it Indian Summer? As opposed to Bonus Summer, or Extra Summer? The Cajuns of Louisiana have a cute term: Lagniappe (Lan-yap), for an unexpected pleasant little add-on. 
I rather like Indian Summer, both the event and the term. But Lagniappe Summer works fine, too. All so multi-cultural.
Wishing you a lovely rest of summer and a blissful Indian/Bonus/Lagniappe Summer as well.
Joe Girard © 2020
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 The taxonomy of the Red Wolf is much debated – sort of like whether the names Indian, Warrior and Redskin are insensitive or not. Many believe that it is a cross between the Gray Wolf and Coyote. Others say it is a blend with an additional wolf species.
 The story of Lagniappe. https://culinarylore.com/food-history:what-is-a-lagniappe/
 Apologies to song writer Cole Porter, and every great singer-artist who sang it, for poaching and re-appropriating these words. https://www.youtube.com/watch?v=BOg3B9cELgQ