How was the weather during the Holocaust?

The holocaust lasted six or more years. They had some of the worst winters ever during that time period. The prisoners would die from exposure, disease, dehydration and starvation. But, they were dressed in what is basically considered to be pajamas. Most did not have shoes or decent coats if they did have them. The summers were not nearly as bad but they still died from exposure and murder.

(The holocaust spanned from the early 1930's until 1945 with the fall of Nazi Germany)