I would strongly urge you to keep the fans still running, without any fans you wont have airflow which will cause overheating once your computer is put into load such as gaming. The fans are used to push warm air out the case, your case temperatures are low right now because the intake fans are bringing in cold air from outside into the case. Without the intake fans expect higher temperatures.
Anyways back to the main question, yes I do keep my fans still running in the winter but I do keep them a bit lowered with a fan controller. You may be fine if you do take out a intake fan for now if it really matters.
Anyways this will do the trick:http://www.newegg.ca/Product/Product.aspx?Item=N82E16811999171
or if you are on a tight budget:http://www.newegg.ca/Product/Product.aspx?Item=N82E16811995011
Edit: Anyways those are fantastic temperatures for your computer. What kind of CPU cooler are you using?