It wasn't bad weather. Captain was going way too fast to begin with, and started descent later than needed. So he needed to catch up with the glide/descent slope by making the plane descend faster. Thus gaining even more speed. He still arrived too late (overshot the beginning of the runway), with higher speed (I think 30 kts over the limit) and not configured (flaps not down).

It was really, really, really sloppy approach. And all could have been corrected just by executing go-around literally at any point in time up to 10 sec before he did. Both pilots still would have their careers, and those 5 people would still be alive.