When I was still in my 40s, didn't have too much trouble playing in temps in the low 30Fs. These days, my joints have a difficult time tolerating it. It take much longer to warm up the strokes and if the rallies are too short, the body starts getting very tight.
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).
If u have one foot stuck in yesterday & one foot stuck in tomorrow, u are peeing on today.