Państwa w Europie, Mordoviya, Rosja – O
- Obrochnoye 6,3°C
- Obrochnoye 6°C
- Obrochnoye 6,9°C
- Obryezki 7,2°C
- Obukhovka 6,8°C
- Od Vyelye 5,7°C
- Ogaryevka 6,8°C
- Ogaryevo 6,3°C
- Oktyabr' 4,7°C
- Oktyabr'skiy 6,9°C
- Oktyabr'skiy 7,5°C
- Ol'khovka 7,7°C
- Ol'shanka 6,5°C
- Olyevka 7,5°C
- Orlovka 6,8°C
- Orzhyevka 6,3°C
- Osipovka 7,7°C
- Otradnoye 6,8°C
- Ozhga 2-ya 6,3°C
- Ozyerki 6,8°C
- Ozyerki 6°C
- Ozyernyy 6,8°C
- Ozyernyy 6,3°C