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| Sted | Type | Land | Kontinent | Website |
| Ohio | Område | United States of America | Nord-Amerika | weather-ohio.com |
| Oregon | Område | United States of America | Nord-Amerika | weather-oregon.com |
| Ottawa | By | Canada | Nord-Amerika | weather-ottawa.com |
| Oahu | Øer | United States of America | Nord-Amerika | weatheroahu.com |
| Oceania | Continent | Australien og Oceanien | weatheroceania.com | |
| Oklahoma | Område | United States of America | Nord-Amerika | weatheroklahoma.com |
| Oman | Land | Oman | Asien | weatheroman.com |
| Oranjestad | By | Aruba | Nord-Amerika | weatheroranjestad.com |
| Osaka | By | Japan | Asien | weatherosaka.com |
| Oslo | By | Norway | Europa | weatheroslo.com |
| Ouagadougou | By | Burkina Faso | Afrika | weatherouagadougou.com |
