What are the temperatures in the thermosphere like?
Really high but you would freeze there.
The temperatures of individual particles in the thermosphere are upwards of 2000 degrees. The number of particles in the thermosphere are a tiny fraction of the number at the surface of the Earth. By comparison, for every 100,000 molecules in the atmosphere at the surface of the Earth, there is about 2 in the thermosphere. Since there is so few particles, there would be very few collisions. As such if you were there you would not feel the 2000 degree particles you would feel the cold of the near vacuum.