93 altima why is it hard to start when cold?

Hi,I am a 17 year old farm and ranch kid who has had this problem before. Well have you looked to see if you can plug it in? If not you should see if you can have a block heater put in so that you can plug it in when it is cold out. If you can't you should have somebody look at it because to me it sounds like that your starter is going out.