Eco Region Assessment 25. The northern portion comprises the Clear Hills Upland and is split fairly evenly between Alberta and British Columbia, north of the Peace River district.
Permafrost occurs sporadically along the northern edge of the ecoregion.
Climate differs between the two portions of the ecoregion. The northern portion, which tends to have colder, more severe winters, has a mean annual temperature of about -0.5 degrees Celsius. The temperature varies widely, however, from a summer mean of about 13 degrees Celsius to a winter mean of about -17.5 degrees Celsius. The southern portion, which also varies internally from north to south, has a mean annual temperature of about 1.5 degrees Celsius in the north to about 2 degrees Celsius in the south.