Do the chemicals involved in developing film have to be the same temperature?

I just developed my very first roll of B&W film yesterday. I was very satisfied with results. I am wondering, however, if my results couldve been even better if I wouldve kept all the chemicals I used at the same temp. I used Arista premium developer, stop, and fixer. I rinsed it with plain tap water. The developer was the only one used at 68 degrees. My biggest problem was keeping it at 68 degrees. I can only imagine how much difficult it wouldve been to keep everything, including the water rinse, at that temp! How do you all do it? Im on a strict budget, so I cant afford any special equipment. BTW, I used Legacy Pro 400 iso. Thanks.