FROST Station : PHILADELPHIA WSCMO AP, PA6889 Start yr. - 1961 End yr. - 1990 Requested years of data: 30 Available years of data: 30 Spring: Years of missing data 24 deg = 0, 28 deg = 0, 32 deg = 0 Years with no occurrence 24 deg = 0, 28 deg = 0, 32 deg = 0 Data years used 24 deg = 30, 28 deg = 30, 32 deg = 30 Fall: Years of missing data 24 deg = 0, 28 deg = 0, 32 deg = 0 Years with no occurrence 24 deg = 0, 28 deg = 0, 32 deg = 0 Data years used 24 deg = 30, 28 deg = 30, 32 deg = 30 ------------------------------------------------------------------------ | Temperature ---------------------------|-------------------------------------------- Probability | 24F or lower | 28F or lower | 32F or lower | ---------------------------|--------------|--------------|-------------- | | | Last freezing temperature | | | in spring: | | | | | | 1 year in 10 later than-- | April 1 | April 16 | April 21 | | | 2 year in 10 later than-- | March 27 | April 10 | April 17 | | | 5 year in 10 later than-- | March 17 | March 30 | April 10 | | | First freezing temperature | | | in fall: | | | | | | 1 yr in 10 earlier than-- | November 11 | October 25 | October 13 | | | 2 yr in 10 earlier than-- | November 17 | October 31 | October 18 | | | 5 yr in 10 earlier than-- | November 27 | November 12 | October 29 | | | ------------------------------------------------------------------------