Last summer was unusually cool and did not strain the system, he said.

It was an unusually cool and windy day when I got back to the city.

Last summer's unusually cool and overcast weather may be to blame.

Unusually cool and wet weather have also been factors, he said.

It should be noted that we live in an unusually cool period in Earth's long term history.

The night after Hyatt's report, the "weather turned unusually cool, and the men got very little sleep."

The night was cooL unusually cool for this time of year.

From that humble start, Wang has developed into an unusually cool pitcher.

The night had been unusually cool, and a slight drizzle was falling.

A similar shortage was avoided last summer, they added, because temperatures were unusually cool.