FROST Station : VIENNA, MD9140 Start yr. - 1961 End yr. - 2000 Requested years of data: 40 Available years of data: 40 Spring: Years of missing data 24 deg = 5, 28 deg = 3, 32 deg = 3 Years with no occurrence 24 deg = 0, 28 deg = 0, 32 deg = 0 Data years used 24 deg = 35, 28 deg = 37, 32 deg = 37 Fall: Years of missing data 24 deg = 5, 28 deg = 5, 32 deg = 4 Years with no occurrence 24 deg = 0, 28 deg = 0, 32 deg = 0 Data years used 24 deg = 35, 28 deg = 35, 32 deg = 36 ------------------------------------------------------------------------ | Temperature ---------------------------|-------------------------------------------- Probability | 24F or lower | 28F or lower | 32F or lower | ---------------------------|--------------|--------------|-------------- | | | Last freezing temperature | | | in spring: | | | | | | 1 year in 10 later than-- | March 29 | April 11 | April 23 | | | 2 year in 10 later than-- | March 23 | April 5 | April 18 | | | 5 year in 10 later than-- | March 11 | March 25 | April 8 | | | First freezing temperature | | | in fall: | | | | | | 1 yr in 10 earlier than-- | November 11 | October 22 | October 11 | | | 2 yr in 10 earlier than-- | November 17 | October 28 | October 17 | | | 5 yr in 10 earlier than-- | November 29 | November 9 | October 29 | | | ------------------------------------------------------------------------