FROST Station : PERRYVILLE WATER PLT, MO6641 Start yr. - 1961 End yr. - 1990 Requested years of data: 30 Available years of data: 30 Spring: Years of missing data 24 deg = 7, 28 deg = 6, 32 deg = 5 Years with no occurrence 24 deg = 0, 28 deg = 0, 32 deg = 0 Data years used 24 deg = 23, 28 deg = 24, 32 deg = 25 Fall: Years of missing data 24 deg = 9, 28 deg = 8, 32 deg = 8 Years with no occurrence 24 deg = 0, 28 deg = 0, 32 deg = 0 Data years used 24 deg = 21, 28 deg = 22, 32 deg = 22 ------------------------------------------------------------------------ | Temperature ---------------------------|-------------------------------------------- Probability | 24F or lower | 28F or lower | 32F or lower | ---------------------------|--------------|--------------|-------------- | | | Last freezing temperature | | | in spring: | | | | | | 1 year in 10 later than-- | April 11 | April 20 | May 6 | | | 2 year in 10 later than-- | April 6 | April 14 | April 30 | | | 5 year in 10 later than-- | March 26 | April 5 | April 18 | | | First freezing temperature | | | in fall: | | | | | | 1 yr in 10 earlier than-- | October 25 | October 4 | October 1 | | | 2 yr in 10 earlier than-- | October 31 | October 11 | October 5 | | | 5 yr in 10 earlier than-- | November 12 | October 23 | October 13 | | | ------------------------------------------------------------------------