Państwa w Europie, Chernihiv, Ukraina – O
- Obmachev 6,7°C
- Obolon'ye 7,4°C
- Obychev 7,5°C
- Odintsy 8,3°C
- Okhrameyevichi 8,4°C
- Okuninov 8,3°C
- Olbin' 8,3°C
- Oleshnya 6,7°C
- Olishevka 9,2°C
- Ol'khovka 9,1°C
- Ol'shana 7,6°C
- Ol'shanka 9,1°C
- Ol'shanoye 7,6°C
- Ombish 6,8°C
- Orlikovka 9,2°C
- Orlovka 9,2°C
- Osich' 6,7°C
- Osmaki 6,7°C
- Os'maki 7,6°C
- Osov 5,6°C
- Ostapovka 9,9°C
- Oster 8,3°C
- Ostroushki 8,3°C
- Ozeryane 6,3°C
- Ozeryany 6,3°C