I would have to say that these were the worst conditions I've raced in yet. 45-60km/h headwind on the way out, rain, hail, and about 3-4 deg.
My fingers were so numb at the start (when it started to hail), they were stinging. At one stage the wind was so strong, I was only doing 13km/h up a 2% gradient.

Oh, the run home was fun though.

55-60km/h nearly all the way, and the sun came out.
Kev.