Taking the local weather in Grand Haury 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 January and February, with an average of -6°C. The rainiest months in Grand Haury are December, May, June and January, with each month seeing an average of 195 mm of rainfall.