If you’re looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Camp Sherman: The hottest months are usually July and August, with an average temperature of 17°C, while the coldest months are December and February, with an average of 0°C. The snowiest months in Camp Sherman are February, January, March and April, with each month seeing an average of 21 cm of snowfall.