There used to be a tennis sock that went around your hand and then around the racket handle. Ordinary racketball gloves also work well, though you might want to use a special racket with a slightly smaller grip.
Originally Posted by SystemicAnomaly
Balls don't bounce very well in colder temps, even temps in the 50Fs. Need to warm them up by bouncing them a lot or artifically with a heating pad so that they don't feel like Flinstone's balls (aka rocks).
Cold makes the air in pressurized balls contract, thereby reducing the pressure and making them play dead. I find that pressureless balls keep their bounce better in cold temperature. That makes sense when you realize that the first pressureless tennis balls were made in Sweden (Tretorn brand).