I've had motors not arm on hot days, so I always set the end points on the radio for a little more travel than necessary just to make sure the ESC will always arm.
I've had ESCs keep running for several seconds after loosing the connection from ESC to receiver (in a crash)- so the model keeps trying to dig it's way further into the ground. Not funny at the time, but hilarious later.
I've flown electrics at and below freezing- there is some loss of power if the batteries are cold, but if you keep the batteries warm the ESC and motor actually perform better than on a warm day (and the increased air density also helps the performance). Never had an ESC not shutoff.
Do you have glitch problems in normal weather? If the motor and ESC are both cold, the current draw can be higher making any glitching more noticeable.