[header] How to roast a pig [title] Set the temperature of your grill around 200 to 250ºf (93.3 to 121.1ºc). [step] Generally, grills will have a built in thermometer where you can monitor the temperature. However, if your grill doesn't have a thermometer, you insert a large meat thermometer into the top vent to check the temperature. 
[substeps] If possible, place your grill in a shielded area where wind will not hit it directly. Wind and the outside temperature can have an effect on the internal temperature of the grill.