Grouse Mountain mild as the Lower Mainland. In December (the coldest month statistically), Grouse Mountain has an average high and low of and respectively. This freeze/thaw cycle can allow for large amounts of rain to fall on some occasions every winter. Nonetheless, heavy snow is more frequent in the winter, which allows for a deep snow-pack, lasting on average from mid-November until early May. Summer is warm and relatively dry. August is the warmest month, with an average high and low of and respectively. Grouse Mountain has built an observation deck (accessible by elevator) on a 1.5 megawatt wind turbine of Leitwind
Winter of 1985–86 in Great Britain and Ireland recorded on the 20th at Cairngorm. April 1986 averaged at which is 2.1 °C below the 1961-1990 average and the coldest since 1922. The temperature reached for the first time on April 4, and for the first time on April 26. There was 19 days of snow at Glenlivet. It was also a wetter than average month. Winter of 1985–86 in Great Britain and Ireland The Winter of 1985–86 in Great Britain and Ireland contained two periods of notably cold weather. November 1985 brought an early start to winter with the month being the coldest in the Central England region