The beer looked ready. The airlock was silent and showed no activity for several minutes. I peaked under the lid of my primary fermenter and the krausen had fallen and the beer looked clear. I poured a sample and it tasted good. However, when I took a hydrometer reading the beer was NOT done -- my readings went from 1.052 to 1.018 -- which is about 63-64 percent attenuated and my yeast, Safale S-04, should get me to at least 70 percent. Since the Party Pig people say that you shouldn't put beer in a pig until the gravity is below 1.018, I decided to rack the beer into a carboy.
So what happened? I'm not sure, but I think the cold temperatures of the last few days (days in 30s and nights in 20s) might have something to do with it. I'm hoping that I see some changes in few days.