FROST Station : HELENA, AR3242 Start yr. - 1961 End yr. - 1990 Requested years of data: 30 Available years of data: 30 Spring: Years of missing data 24 deg = 3, 28 deg = 3, 32 deg = 3 Years with no occurrence 24 deg = 0, 28 deg = 0, 32 deg = 0 Data years used 24 deg = 27, 28 deg = 27, 32 deg = 27 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-- | March 18 | April 1 | April 9 | | | 2 year in 10 later than-- | March 9 | March 24 | April 3 | | | 5 year in 10 later than-- | February 22 | March 8 | March 22 | | | First freezing temperature | | | in fall: | | | | | | 1 yr in 10 earlier than-- | November 10 | October 30 | October 19 | | | 2 yr in 10 earlier than-- | November 17 | November 4 | October 26 | | | 5 yr in 10 earlier than-- | December 1 | November 15 | November 7 | | | ------------------------------------------------------------------------