If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Newberry: The hottest months are usually July and August, with an average temperature of 17°C, while the coldest months are February and January, with an average of -6°C. The snowiest months in Newberry are January, November, March and December, with each month seeing an average of 26 cm of snowfall.