Years ago, I used a free program called StampPlot Pro, a quick Google shows it is still available for Windows:
http://www.selmaware.com/stampplot/
Were I going to do this sort of thing today, I would likely just use Processing to perform the PC effort.
This is an overview: https://www.arduino.cc/en/Tutorial/Graph
Of course, one could just connect a nice, inexpensive LCD to the Ardino and plot in that manner ... logging could be to SD if one really wanted recorded history.
http://www.hackster.io/rayburne/color-barometric-extension-to-gps-date-time-clock
Or, one can use Excel as mentioned previously and with a little VBA help, you define your input range, graph, and the USB keyboard simulated data will always stay in a specified range. The basics are here:
http://www.hackster.io/rayburne/arduino-to-excel-using-v-usb
The above works particularly well with the 32U4 Micro running in keyboard emulation.