The temperature in the city is reportedly can reach minus 60 degrees Celsius, lho! Even the Oymyakon the coldest town crowned in the world. The Northern Lights you can see near the capital city of Yakutsk and in some areas the settlements there.
Some cities closed to individual travelers, but if the tour groups are allowed, kok. Interested in a visit to Yakutsk? There are regular flights from Moscow to Yakutsk with the price of $330 and takes 6.5 hours.