Dec. 14 When the First Snow of the Season Typically Occurs When the First Snow of the Season Typically Falls Weather Channel According to the National Weather Service in Caribou, The Weather Channel late January to early February the Weather Channel According to the National Weather Service in Caribou, The average date of the first measurable snow When the First Snow of the Season Typically Falls When the First Snow of the Season Typically Falls When the First Snow of the Season Typically Falls the average first snow average by Dec. 14. first accumulating snow When the First Snow of the Season Typically Falls