Hottest temperatures

Arctic Circle sees 'highest-ever' recorded temperatures

The record still needs to be verified, but it appears to have been 18C higher than the average maximum daily temperature in June.

Hot summer weather is not uncommon in the Arctic Circle, but recent months have seen abnormally high temperatures.

The Arctic is believed to be warming twice as fast as the global average.

Verkhoyansk, home to about 1,300 people, sits just inside the Arctic Circle, in remote Siberia. It has an extreme climate with temperatures plunging in January to an average maximum of -42C and then surging in June to 20C.