[FormerACLUmember]

I have read that around 1300 AD, There was no snow on the mountains of California. Then came the Little Ice Age that lasted until the 18th Century.

Yes, indeed. Allowed the Vikings to colonize a lush coastal Greenland, only to kill them off in the deep freeze to follow in the Little Ice Age.

[RobbyS]

The temps were dropping during the first half of the 14th Century. This caused a large reduction in agricultural production in Europe , and food stocks went down. One reason for the huge toll taken by the Black Death was owing to widespread malnutrition.