FROST Station : CASTLE ROCK, CO1401 Start yr. - 1962 End yr. - 1990 Requested years of data: 29 Available years of data: 29 Spring: Years of missing data 24 deg = 1, 28 deg = 1, 32 deg = 1 Years with no occurrence 24 deg = 0, 28 deg = 0, 32 deg = 0 Data years used 24 deg = 28, 28 deg = 28, 32 deg = 28 Fall: Years of missing data 24 deg = 4, 28 deg = 4, 32 deg = 4 Years with no occurrence 24 deg = 0, 28 deg = 0, 32 deg = 0 Data years used 24 deg = 25, 28 deg = 25, 32 deg = 25 ------------------------------------------------------------------------ | Temperature ---------------------------|-------------------------------------------- Probability | 24F or lower | 28F or lower | 32F or lower | ---------------------------|--------------|--------------|-------------- | | | Last freezing temperature | | | in spring: | | | | | | 1 year in 10 later than-- | May 11 | May 22 | June 10 | | | 2 year in 10 later than-- | May 5 | May 17 | June 4 | | | 5 year in 10 later than-- | April 25 | May 8 | May 24 | | | First freezing temperature | | | in fall: | | | | | | 1 yr in 10 earlier than-- |September 22 |September 18 |September 10 | | | 2 yr in 10 earlier than-- |September 29 |September 23 |September 14 | | | 5 yr in 10 earlier than-- | October 11 | October 3 |September 23 | | | ------------------------------------------------------------------------