This type of climate offers some of the most extreme seasonal temperature variations found on the planet : In winter , temperatures can drop to − 40 ° C ( − 40 ° F ) and in summer , the temperature may exceed 30 ° C ( 86 ° F ) .
This type of climate offers some of the most extreme seasonal temperature variations found on the planet : In winter , temperatures can drop to -40 ° C ( also -40 ° F ) and in summer , the temperature may exceed 30 ° C ( 86 ° F ) .