PMK is said to respond nearly linearly to temperature changes in the range of 70-80F. For each degree above 70F you decrease your nominal time by 4%. So one way to deal with temperature variation is accept the temperatures that Mother Nature gives you that day and adjust the time.(posted 9226 days ago)Myself, I persist in messing around with water baths and ice cubes to get everything to be 70F. Old habits die hard, I guess.