When you're travelling with pets, keeping track of the weather can make the trip safe and fun for everyone. The hottest months are usually July and August, with an average temperature of 30°C, while the coldest months are January and December, with an average of -1°C. Between January and March, the daytime average is 16°C and the night-time average is -8°C. Between April and June, temperatures average 35°C during the day and 14°C at night. Between July and September, the temperature averages 38°C during the day and 20°C at night. Between October and December, the average temperature is 20°C during the day and -6°C at night.