FROST Station : PEMBINA, ND6947 Start yr. - 1961 End yr. - 1990 Requested years of data: 30 Available years of data: 30 Spring: 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 = 25, 28 deg = 25, 32 deg = 26 Fall: Years of missing data 24 deg = 2, 28 deg = 2, 32 deg = 2 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 ------------------------------------------------------------------------ | Temperature ---------------------------|-------------------------------------------- Probability | 24F or lower | 28F or lower | 32F or lower | ---------------------------|--------------|--------------|-------------- | | | Last freezing temperature | | | in spring: | | | | | | 1 year in 10 later than-- | May 18 | May 26 | June 4 | | | 2 year in 10 later than-- | May 11 | May 21 | May 31 | | | 5 year in 10 later than-- | April 29 | May 11 | May 22 | | | First freezing temperature | | | in fall: | | | | | | 1 yr in 10 earlier than-- |September 21 |September 14 | August 31 | | | 2 yr in 10 earlier than-- |September 26 |September 19 |September 5 | | | 5 yr in 10 earlier than-- | October 7 |September 27 |September 15 | | | ------------------------------------------------------------------------ FROST Station : RUGBY, ND7704 Start yr. - 1961 End yr. - 1990 Requested years of data: 30 Available years of data: 30 Spring: Years of missing data 24 deg = 2, 28 deg = 2, 32 deg = 2 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 = 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 = 29, 28 deg = 29, 32 deg = 29 ------------------------------------------------------------------------ | Temperature ---------------------------|-------------------------------------------- Probability | 24F or lower | 28F or lower | 32F or lower | ---------------------------|--------------|--------------|-------------- | | | Last freezing temperature | | | in spring: | | | | | | 1 year in 10 later than-- | May 7 | May 20 | May 31 | | | 2 year in 10 later than-- | May 2 | May 14 | May 25 | | | 5 year in 10 later than-- | April 22 | May 3 | May 14 | | | First freezing temperature | | | in fall: | | | | | | 1 yr in 10 earlier than-- |September 23 |September 17 |September 5 | | | 2 yr in 10 earlier than-- |September 29 |September 23 |September 10 | | | 5 yr in 10 earlier than-- | October 11 | October 4 |September 20 | | | ------------------------------------------------------------------------