The weather, even for January, was exceptionally cold.

这种天气即使在一月份也算得上非常寒冷。

《牛津词典》

Both retailers and small businesses say the exceptionally cold weather in March damaged business activity.

BBC: Firms count damage done by March cold weather

Climate Change Minister Stewart Stevenson said exceptionally cold weather conditions in Scotland in 2010 was to blame.

BBC: Greenhouse gas emissions

In a new report to the council's resources committee, officers said an "exceptionally cold" winter had hampered progress.

BBC: Cold and election 'hampered Highland Council CO2 aims'