The best I can tell my Cuddeback is not affected by the cold any at all, In my old 35mm it really went thru the batteries when it dropped to about 20 or lower, but the Cuddeback seems to take about as many pictures in the cold as it does in nice weather, I have about 4000 pictures on 3 sets of batteries since the first part of Aug with my Cuddeback. The only thing is the frost that gets on the viewing windows at times gives you a blurry picture.