Abstract:Based on the data of daily average temperature from 1960 to 2008 in all winters of 70 meteorological stations in Hubei Province,cold winters for single station were divided into two grades designated as “weak” and “strong”.Regional or provincial cold winters were analyzed based on cold winters of single station.It is revealed that the frequencies of cold winters for single station showed longitude type and the frequencies of strong cold winters for single station showed latitude type,meanwhile the frequencies of cold winters for most of stations showed decreasing trends significantly during the last 48 years.From 1961 to 1985,the occurrences of regional cold winters had a higher frequencies and the rate of 5 regional cold winters was over 60 percent.The incidence of cold winters decreased obviously since 1986.The results also showed that there were 13 provincial cold winter years over 48 years with 9 severe cold winters which mainly concentrated during 1960s and 1970s and led to serious damages on agricultural production,communication,electric power and people’s daily life.