A method for determining winter design temperatures

A logical method of arriving at winter design temperatures for Canadian conditions is described. The method makes use of the probable frequency of occurrence of low temperatures during January. A tabulation of design temperatures on four different bases of frequency of occurrence is presented for 15 Canadian localities and these temperatures are compared with the design temperatures in common use. An outline map of Canada with winter design temperature lines is included. It is shown that at Toronto and Montreal, city weather stations report winter temperatures slightly higher than those read at the adjacent airports.On d\ue9crit ici une m\ue9thode logique permettant d?obtenir des temp\ue9ratures de calcul hivernales pour les conditions canadiennes. La m\ue9thode en question utilise la fr\ue9quence probable des basses temp\ue9ratures durant le mois de janvier. Une tabulation des temp\ue9ratures de calcul sur quatre (4) bases diff\ue9rentes de fr\ue9quence d?observation est pr\ue9sent\ue9e pour 15 emplacements canadiens, et ces temp\ue9ratures sont compar\ue9es aux temp\ue9ratures de calcul en usage courant. Nous avons inclus une carte \ue0 grandes lignes du Canada comprenant les temp\ue9ratures de calcul hivernales. Il est d\ue9montr\ue9 qu?\ue0 Toronto et \ue0 Montr\ue9al, les stations m\ue9t\ue9orologiques respectives font \ue9tat de temp\ue9ratures hivernales l\ue9g\ue8rement plus \ue9lev\ue9es que celles enregistr\ue9es aux a\ue9roports voisins.Peer reviewed: NoNRC publication: Ye