Taking the local weather in Juneau into account is an important factor for planning your visit, especially if you plan to spend your trip by the pool. The hottest months are usually July and August, with an average temperature of 11°C, while the coldest months are February and December, with an average of -5°C. The snowiest months in Juneau are January, February, December and November, with each month seeing an average of 72 cm of snowfall.