Fluffy was discovered last Thursday by her owners, who live in Kalispell in the far northwest of Montana - an area hit by ice fog and snow, where temperatures were between -1C (30F) and -8C (17F).
They found her unresponsive in a snow bank, and rushed her to the Animal Clinic of Kalispell for urgent treatment.
In a photo shared on Facebook by the clinic, you can see the snow matted into Fluffy's usually fuzzy fur.
Fluffy when she arrived at the animal clinic. Credit: Animal Clinic of Kalispell
Dr Jevon Clark told ABC News that when Fluffy had been brought to the clinic, her temperature was so slow it didn't even register on the thermometer.
The thermometer had a bottom range of 90 degrees, but according to Clark, cats should normally have a temperature of around 101 degrees.
Vets at the clinic spent around two hours taking the chill off Fluffy with warm water and blankets, but the poor kitty's temperature was still too low, so she was taken to the emergency room for more treatment.
Fluffy being treated at the clinic. Credit: Animal Clinic of Kalispell
Thankfully, after a few more hours, Fluffy finally began to show signs of recovery.
In an update posted to Facebook today - a week after Fluffy was found - the animal clinic announced the 'amazing' feline had made a complete recovery.
The post read: "Amazing success and survival story from this week. Some clients found their injured cat buried in snow.
"They brought her to us essentially frozen and unresponsive. Her temperature was very low but after many hours she recovered and is now completely normal. Fluffy is amazing!"
Fluffy the cat made a fully recovery. Credit: Animal Clinic of Kalispell
Commenting on the post, social media users were keen to offer their well wishes for the adorable cat.
One person said: "This is a miracle with some quick thinking on the part of her 'parents' and this wonderful vet! This outdoor cat has certainly used up one of her nine lives! She is so lucky that she found such amazing care. LOVE this story!"
Another commented: "Oh my word!!! Thankful the cat is ok! It is so cold out."
Someone else said: "Wow!!!! That's really quite amazing... Sounds like this kitty really wanted to live."
A fourth pondered: "Good save. Maybe cats really do have nine lives?"
Maybe wait until the temperatures have risen a bit before your next adventure, eh Fluffy? It's totally okay to just lie on the sofa with a blanket and a roaring fire - it's what the rest of us will be doing, for sure.
Featured Image Credit: Animal Clinic of Kalispell