"Figure 4. Timing of the Last Spring Frost and First Fall Frost in the Contiguous 48 States, 1895-2023",,
Source: EPA's Climate Change Indicators in the United States: www.epa.gov/climate-indicators,,
"Data source: Kunkel, 2024",,
Web update: June 2024,,
Units: days,,
,,
Year,Deviation from average date of last spring frost,Deviation from average date of first fall frost
1895,-0.153333333,-3.508333333
1896,0.206060606,-3.593939394
1897,0.426363636,-3.601363636
1898,0.85030303,-3.683333333
1899,1.110606061,-3.598030303
1900,1.047272727,-3.163636364
1901,1.014545455,-2.75
1902,2.632727273,-2.543636364
1903,2.791818182,-3.25
1904,3.300909091,-3.244545455
1905,3.903636364,-2.62
1906,3.98,-3.051818182
1907,3.711818182,-3
1908,3.852727273,-3.310909091
1909,3.729090909,-2.71
1910,3.849090909,-2.77
1911,4.210909091,-3.718181818
1912,4.519090909,-4.126363636
1913,3.734545455,-3.962727273
1914,3.52,-3.116363636
1915,3.705454545,-2.79
1916,3.340909091,-2.770909091
1917,2.854545455,-2.219090909
1918,3.314545455,-1.981818182
1919,3.532727273,-1.47
1920,3.517272727,-2.03
1921,3.402727273,-2.008181818
1922,3.216363636,-0.970909091
1923,2.835454545,-0.415454545
1924,2.712727273,-0.559090909
1925,2.865454545,-0.97
1926,2.573636364,-0.111818182
1927,2.549090909,-0.210909091
1928,2.591818182,-0.32
1929,1.950909091,-0.282727273
1930,1.24,-0.669090909
1931,0.840909091,-0.187272727
1932,0.440909091,-0.218181818
1933,0.330909091,-0.180909091
1934,-0.16,-0.043636364
1935,-0.086363636,0.428181818
1936,-0.818181818,0.867272727
1937,-1.157272727,-0.549090909
1938,-0.994545455,-0.827272727
1939,-0.451818182,-0.742727273
1940,-0.150909091,-1.025454545
1941,-0.095454545,-0.481818182
1942,0.647272727,-0.321818182
1943,0.454545455,0.025454545
1944,0.29,-0.397272727
1945,0.983636364,-0.213636364
1946,0.922727273,-0.703636364
1947,1.27,-1.428181818
1948,1.581818182,-0.860909091
1949,1.686363636,-0.469090909
1950,1.23,-0.982727273
1951,1.380909091,-0.739090909
1952,1.371818182,-0.950909091
1953,0.616363636,-1.208181818
1954,0.837272727,-1.527272727
1955,1.281818182,-1.165454545
1956,0.878181818,-1.45
1957,0.616363636,-1.221818182
1958,1.189090909,-0.245454545
1959,0.990909091,-0.838181818
1960,0.596363636,-1.130909091
1961,1.435454545,-1.250909091
1962,1.311818182,-1.226363636
1963,1.810909091,-1.09
1964,2.06,-1.117272727
1965,2.145454545,-1.061818182
1966,2.365454545,-0.869090909
1967,2.29,-0.66
1968,2.711818182,-0.13
1969,2.36,-1.548181818
1970,2.236363636,-1.140909091
1971,2.534545455,-1.228181818
1972,1.5,-0.99
1973,1.214545455,-0.925454545
1974,0.819090909,-0.946363636
1975,0.727272727,-1.103636364
1976,0.645454545,-1.013636364
1977,0.053636364,-1.531818182
1978,0.444545455,-1.600909091
1979,0.116363636,-2.157272727
1980,-0.552727273,-1.4
1981,-0.485454545,-0.94
1982,-1.318181818,-0.819090909
1983,-0.937272727,-0.669090909
1984,-0.723636364,-1.227272727
1985,-1.01,-0.861818182
1986,-1.847272727,-1.200909091
1987,-1.817272727,-1.094545455
1988,-2.031818182,-1.485454545
1989,-2.815454545,-0.649090909
1990,-3.217272727,-0.786363636
1991,-2.391818182,-0.445454545
1992,-2.44,-0.299090909
1993,-2.656363636,0.981818182
1994,-3.339090909,0.759090909
1995,-3.997272727,0.930909091
1996,-4.152727273,0.772727273
1997,-3.027272727,1.815454545
1998,-3.425454545,2.019090909
1999,-3.531818182,3.156363636
2000,-3.604545455,2.994545455
2001,-3.707272727,3.195454545
2002,-4.402727273,3.452727273
2003,-4.268181818,3.452727273
2004,-3.997272727,2.777272727
2005,-3.784545455,3.428181818
2006,-3.698181818,4.087272727
2007,-4.348181818,4.077272727
2008,-4.466363636,4.060909091
2009,-4.120909091,4.367272727
2010,-4.351818182,4.8
2011,-4.75,5.455454545
2012,-5.150909091,6.203636364
2013,-5.182727273,6.093636364
2014,-5.750909091,5.965454545
2015,-5.275454545,5.830909091
2016,-4.780909091,6.533636364
2017,-4.494545455,6.540909091
2018,-3.813636364,7.28
2019,-4.249393939,7.308939394
2020,-4.35969697,7.377878788
2021,-3.953636364,6.899545455
2022,-3.432121212,6.233030303
2023,-2.743333333,6.118333333