A few days back a comment from gerry raised the question about temperature and it's impact on racing. Do horses have temperature preferences and why isn't the temperature of the races recorded?
The simple answer is yes, the temperature definitely does affect some horses. As with every other factor like distance, race track and track condition some horses are affected more than others. Some horses simply adapt very well and warm weather is not going to bother them. Being natural cold weather animals horses are not likely to be adversely affected by cool temperatures, what will affect them is heat. However horses are individuals and there is no way you can make a statement across the board like all horses will like this and not be affected by that.
The phenomenon can already be observed with certain horses. Funny Cide is a well documented case of a horse who supposedly prefers cool weather. Evening Attire has always done better in the fall and winter than he has in the summer. There would be many other cases as well if you took the time to observe them.
Pomeroy actually appears to favor hot weather. In his 18 career races (including his run in last year's Breeders Cup Sprint) he has run 11 races from June to September and his record in those races is 11-7-3-1. Incidentally his third place finish was actually a win where he was disqualified to third. His record in races run in all other months is 7-0-1-1. To me that seems like temperature is a big factor to him. We don't actually know how hot it was on those occasions but he certainly did much better in the summer months.
I'm of the opinion that the Racing Form leaves out a few things that it shouldn't. Temperature is one of them. Although it would take up more space on an already crowded form line I think the temperature should be recorded because it's part of the puzzle for many horses.
Another bit of information I'd add is the weight of each horse for each race. This would present more difficulties logistically but they already do it in Hong Kong so obviously there is a method that can be worked out efficiently.
Also when are they going to start using a penetrometer for the Turf courses? Europeans use them and I really don't see any justification for failing to use them. How soft is soft? When is a track really yielding as supposed to good? The penetrometer gives a numerical rating for any surface it's jabbed into so one could accurately assess the firmness of the ground and it would be uniform nation wide.