This is a difficult question to answer. I have no idea how you would grow a Cymbidium indoors during the winter and there are various types of Cymbidiums.
For example, we are setting up a local Society's Spring Show tonight and i'm expecting quite a few Cymbidiums but most will be the late season flowering type which usually have some of the Australian native cymbidiums in the pedigree. At the other of the scale we have the so-called warmth tolerant types that bloom early autumn and were largely developed in Florida.
In the middle are the main bulk of Cymbidiums that might be fussy or not fussy about Summer night temperatures affecting later flowering.
Does the plant have a name tag?

Not sure where that puts our local native one, C. canaliculatum. It flowers in spring which is the hottest time of year here. They'd be better described as hot tolerant rather than warmth tolerant.

This warmth tolerant jargon relates back to the hybidisers in the United Kingdom who used orchids such as Cymbidium lowianum in their breeding programs so that they could grow them in a glass-house with minimum heating.
When the 2nd world war came some cymbidiums were sent OS just in case. Growers in the USA and other places found that these would not flower well in places where the summer night temperatures were too warm.

So, it is a waste of time trying to grow a "standard" Cymbidium in the Northern Territory, Australia. You would get lovely green leaves and not much else, similar for most places in Florida.

My father grew a lot of Cymbidiums in Melbourne, seemed an ideal climate for them. The only one I've seen here is the C. canaliculatum which grows in open exposed very hot situations. C. madidum on the east coast is in rainforest, so although not cold, it still doesn't get very hot.

Bunnings sometimes comes out with Cymbidiums in those plastic packs. Can't help but think they're plants sitting on 'Death Row'.

Here are some Standard type Cymbidiums, note the coloured V in the lips, this
goes back generations to Cymbidium lowianum. I suppose this is going off track a bit, but might be helpful.
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