Design Ambient Temperatures – Above Ground
Canada
| Location | °C | °F | Location | °C | °F | |
| British Columbia | Ontario (continued) | |||||
| Dawson Creek | –39 | –39 | Dryden | –34 | –29 | |
| Ft. Nelson | –41 | –42 | Hamilton | –20 | –4 | |
| Kamloops | –32 | –25 | Kenora | –33 | –28 | |
| Pt. Alberni | –21 | –5 | London | –21 | –5 | |
| Prince George | –42 | –43 | Niagara Falls | –15 | 5 | |
| Prince Rupert | –21 | –5 | North Bay | –31 | –24 | |
| Vancouver | –13 | 8 | Ottawa | –28 | –18 | |
| Yukon | Peterborough | –26 | –15 | |||
| Dawson | –52 | –62 | Sarnia | –14 | 6 | |
| Whitehorse | –45 | –49 | Sault St. Marie | –26 | –15 | |
| Alberta | Sioux Lookout | –39 | –38 | |||
| Calgary | –37 | –35 | Sudbury | –29 | –21 | |
| Cold Lake | –48 | –55 | Thunder Bay | –34 | –30 | |
| Edmonton | –39 | –39 | Timmins | –34 | –30 | |
| Ft. McMurray | –50 | –59 | Toronto | –23 | –9 | |
| Hinton | –41 | –42 | Windsor | –18 | 0 | |
| Medicine Hat | –40 | –41 | Québec | |||
| Red Deer | –43 | –45 | Arvida | –31 | –23 | |
| Northwest Territories | Gaspé | –31 | –23 | |||
| Alert | –42 | –44 | Montréal | –25 | –14 | |
| Baker Lake | –43 | –45 | Québec City | –27 | –16 | |
| Frobisher Bay | –46 | –51 | Thetford Mines | –31 | –23 | |
| Resolute | –43 | –45 | Trois Riviéres | –27 | –17 | |
| Yellowknife | –45 | –49 | New Brunswick | |||
| Saskatchewan | Edmunstun | –26 | –14 | |||
| Prince Albert | –44 | –48 | Fredericton | –23 | –9 | |
| Regina | –39 | –39 | Moncton | –24 | –11 | |
| Saskatoon | –43 | –45 | St. John | –21 | –6 | |
| Swift Current | –39 | –39 | Nova Scotia | |||
| Manitoba | Annapolis | –24 | –11 | |||
| Brandon | –38 | –36 | Halifax | –19 | –3 | |
| Churchill | –42 | –43 | Sydney | –22 | –7 | |
| Gimli | –39 | –39 | Yarmouth | –16 | 4 | |
| The Pas | –42 | –43 | Prince Edward Island | |||
| Winnipeg | –36 | –33 | Charlottetown | –21 | –6 | |
| Ontario | Newfoundland | |||||
| Belleville | –22 | –7 | Corner Brook | –20 | –4 | |
| Brockville | –23 | –9 | Gander | –21 | –6 | |
| Chalk River | –29 | –20 | Goose Bay | –34 | –29 | |
| Collingwood | –21 | –6 | St. John's | –18 | –1 | |
United States
| Location | °C | °F | Location | °C | °F | |||
| Northeast | South Central | |||||||
| Atlantic City | NJ | –14 | 6 | Dallas | TX | –14 | 6 | |
| Boston | MA | –19 | –2 | Houston | TX | –8 | 17 | |
| Buffalo | NY | –22 | –7 | Little Rock | AK | –14 | 6 | |
| New York | NY | –16 | 3 | New Orleans | LA | –4 | 24 | |
| Philadelphia | PA | –16 | 4 | Oklahoma City | OK | –20 | –4 | |
| Portland | ME | –24 | –11 | Shreveport | LA | –11 | 12 | |
| Pittsburgh | PA | –21 | –6 | Tulsa | OK | –20 | –4 | |
| Providence | RI | –18 | –1 | North Central | ||||
| Syracuse | NY | –24 | –12 | Bismark | ND | –37 | –34 | |
| South Atlantic Coast | Cedar Rapids | IA | –28 | –18 | ||||
| Atlanta | GA | –13 | 9 | Chicago | IL | –25 | –13 | |
| Birmingham | AL | –12 | 10 | Cincinnati | OH | –21 | –5 | |
| Charleston | WV | –23 | –10 | Detroit | MI | –21 | –6 | |
| Greensboro | NC | –7 | 20 | Duluth | MN | –34 | –29 | |
| Jacksonville | FL | –3 | 27 | Des Moines | IA | –26 | –15 | |
| Jackson | MI | –11 | 13 | Indianapolis | IN | –23 | –10 | |
| Louisville | KY | –21 | –5 | Kansas City | MO | –24 | –11 | |
| Memphis | TN | –16 | 4 | Marquette | MI | –28 | –18 | |
| Mobile | AL | –7 | 20 | Milwaukee | WI | –29 | –20 | |
| Nashville | TN | –18 | 0 | Minneapolis | MN | –32 | –25 | |
| Richmond | VA | –13 | 9 | Omaha | NB | –28 | –19 | |
| Savannah | GA | –6 | 22 | Sioux Falls | SD | –28 | –18 | |
| Washington | DC | –14 | 6 | St. Louis | MO | –22 | –8 | |
| Mountain | Wichita | KS | –23 | –9 | ||||
| Billings | MT | –37 | –35 | Williston | ND | –39 | –38 | |
| Boise | ID | –26 | –14 | Western | ||||
| Cheyenne | WY | –30 | –22 | Independence | CA | –12 | 10 | |
| Denver | CO | –26 | –15 | Portland | OR | –14 | 7 | |
| Great Falls | MT | –42 | –44 | Reno | NV | –18 | 0 | |
| Pocatello | ID | –33 | –27 | Sacramento | CA | –2 | 29 | |
| Salt Lake City | UT | –19 | –3 | Seattle | WA | –11 | 13 | |
| Spokane | WA | –29 | –20 | |||||