When you travel with your pet, keeping tabs on the weather can help you make the trip more safe and fun for everyone. The hottest months are usually July and June, with an average temperature of 16°C, while the coldest months are January and February, with an average of -17°C. The snowiest months in Ulan-Ude are December, February, November and January, with each month seeing an average of 35 cm of snowfall.