The question itself contains the answer. At 27 degrees, the virus does not die immediately. The "story" of the virus dying at 27 degrees originated in the "Wuhan hospital reports" of a fictional young resuscitator. This is a successful internet scam.
Actually, we don't know much about the new virus, but we do know a lot about its ilk. They all die in the environment after a few hours or days. If it is warm and humid and the surface maintains the necessary conditions, the virus will live longer.
One thing is certain - it dies almost instantly at 70 degrees, not by Celsius, but by volume of a solution of ethyl alcohol in water or its equivalents. It also dies from the temperature, at 60 degrees Celsius - then it can live for a few minutes. But much more important is its low resistance to disinfectants.
You can't heat your hands to 60 degrees, it hurts.
The patient coughing, an aerosol of bronchial mucus settles on objects, another person touches the object (railing, door handle), then involuntarily touches the face, i.e. the virus entered the eye, mouth, nasal mucosa and an infection occurs.
Regular alcohol intake breaks this chain. Many people ask: where to get alcohol if vodka is not enough for disinfection. 70% alcohol is contained in many perfumery and pharmacy liquids.
As for life at 37 degrees - in the environment, as soon as the drop it is in dries up, it will remain viable for a short time. It's another thing if it gets into the body.
Ultimately, a virus is a parasite unable to live and reproduce outside the host. It uses the resources of the body's cells to reproduce. And the body in response raises its body temperature to reduce its comfort and accelerate the production of antibodies.
Thus in the body it will live as long as the immune system allows it.
Despite alarming reports about the possibility of re-infection, we know that the new virus in this respect does not differ from its counterparts and those who are sick form immunity. How stable it is too early to say.