Taking the local weather in Haines 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 19°C, while the coldest months are December and January, with an average of -2°C. The snowiest months in Haines are January, February, December and March, with each month seeing an average of 13 cm of snowfall.