I went up knowing today will be the warmest day of the week, when I got up to the house it was 6 degrees and I was wondering if I might regret going up. After about 3o min. I warmed up . I finished two more floor joists and as you can see by the pictures the last mortis was the (mortis from hell) it took almost two hours to complete but I only have one more joist left to hang. I am not planning on going up the rest of the week as it is not going to be much above zero.