Year,Value,Contiguous U.S. (Lower 48),Snow,Jun-Aug,(in.)
1940,0.037
1941,0.06
1942,0.054
1943,0.384
1944,0.219
1945,0.468
1946,0.062
1947,0.495
1948,0.053
1949,0.234
1950,0.623
1951,0.593
1952,0.106
1953,0.216
1954,0.512
1955,0.213
1956,0.094
1957,0.164
1958,0.024
1959,0.054
1960,0.072
1961,0.02
1962,0.194
1963,0.173
1964,0.33
1965,0.114
1966,0.156
1967,0.16
1968,0.158
1969,0.403
1970,0.407
1971,0.118
1972,0.072
1973,0.202
1974,0.327
1975,0.292
1976,0.342
1977,0.016
1978,0.075
1979,0.299
1980,0.149
1981,0.167
1982,0.143
1983,0.135
1984,0.298
1985,0.131
1986,0.034
1987,0.053
1988,0.056
1989,0.078
1990,0.172
1991,0.047
1992,0.321
1993,0.397
1994,0.089
1995,0.635
1996,0.014
1997,0.049
1998,0.366
1999,0.225
2000,0.058
2001,0.512
2002,0.365
2003,0.081
2004,0.09
2005,0.306
2006,0.005
2007,0.291
2008,0.485
2009,0.193
2010,0.157
2011,0.208
2012,0.203
2013,0.03
2014,0.106
2015,0.004
2016,0.038
2017,0.153
2018,0.05
2019,0.103
2020,0.279
2021,0.039
2022,0.102
2023,0.036
2024,0.083
2025,0.072