Geography and Climate
Mayo lays in the Yukon Plateau–North Ecoregion, the largest ecoregion entirely within the Yukon. It includes a 450 kilometre length of the Tintina Trench, several large river valleys traverse the ecoregion, including the Pelly, Ross, Macmillan, Stewart, Hess, McQuesten and Klondike.
The central Yukon, where Mayo is located, experiences the greatest range of annual temperatures of any place in North America. Mayo holds the Yukon high-temperature record, based on June 14, 1969, when the thermometer peaked at 36.1 degrees Celsius.
The lowest the temperature has dropped in Mayo is minus 62.2 Celsius, recorded on February 3, 1947. Mayo also holds the Canadian record for the greatest range of absolute temperatures, a difference of 98.3 degrees Celsius between the extreme high and extreme low.
Annual precipitation averages 313 millimetres. This includes 205 mm of rain and 147 centimetres of snow.
- Yukon Geological Survey
Provides information on geoscience and related technical information for all areas of Yukon.
- Ecoregions of the Yukon Territory - Biophysical Properties of a Yukon Landscape
Publication of the Yukon Geological Survey provides an in-depth look at the physical and biological conditions in every part of the territory, and describes the major elements of each ecosystem.
- Environment Yukon
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- Environment Canada
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