As Cellbiogeek says, as long as you can run without problems it's ok. But maybe it is a good idea to check airflow. Open the case and run the computer. Are temps significantly better? Then you can improve your the airflow. Just check no cost or cheap ways around the net (rounding cables, extra fan, etc.)
This will prevent the computer functionallity when the summer comes, and also it is always better to run the CPU cooler.
DIY: read, buy, test, learn, reward yourself!