Morning, the only thing constant in India is the weather. I haven't cycled there but you can expect a lot of dry and humid days with slightly cooler nights as you will be cycling closer to the desert. Rajasthan is almost a desert state (THAR, the Great Indian desert) but also a beautiful state to cycle - deserts + hills + palaces with architectural richness + rural country side + wild life.
Day time temperatures (February - March) should be between 28-34 degree Celsius minimum. Probably cooler at nights (20-21 degrees celsius).
Good luck.
