Important: The Climate Analysis Branch (PSD1) web site will be down in anticipiation of our major web restructuring starting Tuesday Jan 20th at 1pm MST.
You can find more info about the upcoming URL changes here.
You can find more info about the upcoming URL changes here.
Last Day of Snow in Boulder
Data from 1949-2996
Last day of measurable snow (that is, greater than a trace) (1948-1995) earliest day of last snow: Mar 22 (1992) latest day: June 7 (1993) average: April 25 first quartile April 14 median April 25 third quartile May 2
1949: 4/14 3.6 1950: 5/25 8.7 1951: 6/03 0.7 1952: 4/22 0.5 1953: 5/12 3.0 1954: 5/02 2.5 1955: 4/12 2.5 1956: 4/23 4.2 1957: 5/16 4.0 1958: 4/29 3.1 1959: 4/21 1.6 1960: 5/19 1.5 1961: 4/24 2.3 1962: 4/30 1.6 1963: 4/22 1.5 1964: 4/07 1.5 1965: 4/27 1.4 1966: 5/12 2.6 1967: 5/14 2.0 1968: 4/22 0.7 1969: 3/25 2.0 1970: 4/18 4.5 1971: 4/26 0.5 1972: 4/26 0.7 1973: 5/02 0.4 1974: 4/29 0.4 1975: 4/18 8.2 1976: 3/29 1.5 1977: 4/03 0.2 1978: 5/06 14.0 1979: 4/11 5.0 1980: 4/24 4.0 1981: 3/28 2.0 1982: 3/25 1.0 1983: 4/13 5.0 1984: 4/21 2.0 1985: 4/25 0.9 1986: 4/17 1.5 1987: 4/21 0.2 1988: 5/02 1.0 1989: 4/30 3.1 1990: 5/01 0.1 1991: 5/05 0.4 1992: 3/22 2.0 1993: 6/07 0.1 1994: 4/30 0.8 1995: 5/24 0.8 1996: 4/22 1.2 1997: 4/26 1.2 1998: 4/20 0.2 2001: 5/21 3.6 2002: 5/24 1.1 2003: 5/10 5.2 2004: 4/30 1.9 2005: 5/01 0.2 2006: 5/10 0.1[Pages are for curiosity only; there are no guarantees that the data is correct}