If the Planet is Getting Warmer, Why Do We Have Blizzards?

The fact that the weather may be getting warmer is probably the cause of the blizzards. The cold air from the winter transforming into warm air is a difficult process. The cold air is not used to the warm air, therefore, all that cold and hot air combined mixes the temperature in the atmosphere making it become a bad weather condition. It probably goes to one side of either hot and cold weather and cause the weather to go to an extreme level because it is not normal and it is having a hard time deciding on weather to be warm or cold since both weathers are mixed together.