"Figure 1. Heating and Cooling Degree Days in the Contiguous 48 States, 1895-2023",,
Source: EPA's Climate Change Indicators in the United States: www.epa.gov/climate-indicators,,
"Data source: NOAA, 2024",,
Web update: June 2024,,
Units: degree days (Fahrenheit),,
,,
Year,Heating degree days (colder than 65°F),Cooling degree days (warmer than 65°F)
1895,5092,1149
1896,4661,1280
1897,4711,1209
1898,4704,1264
1899,4842,1244
1900,4521,1315
1901,4937,1251
1902,4748,1170
1903,4852,1010
1904,5048,1082
1905,4942,1190
1906,4664,1198
1907,4800,1082
1908,4556,1173
1909,4745,1138
1910,4679,1141
1911,4596,1307
1912,5072,1110
1913,4515,1162
1914,4802,1182
1915,4694,1072
1916,4881,1149
1917,5268,1060
1918,4724,1205
1919,4661,1218
1920,4884,1076
1921,4122,1348
1922,4540,1265
1923,4662,1138
1924,5019,1077
1925,4634,1298
1926,4858,1178
1927,4421,1138
1928,4630,1125
1929,4789,1153
1930,4645,1244
1931,4213,1351
1932,4542,1222
1933,4438,1359
1934,4466,1392
1935,4747,1210
1936,4757,1382
1937,4774,1266
1938,4291,1255
1939,4393,1328
1940,4890,1110
1941,4449,1252
1942,4628,1168
1943,4768,1263
1944,4674,1253
1945,4635,1174
1946,4234,1157
1947,4729,1252
1948,4712,1223
1949,4403,1290
1950,4654,1104
1951,4692,1194
1952,4542,1295
1953,4232,1298
1954,4378,1300
1955,4675,1303
1956,4540,1212
1957,4487,1211
1958,4835,1187
1959,4533,1317
1960,4850,1200
1961,4650,1153
1962,4781,1187
1963,4815,1208
1964,4633,1187
1965,4628,1153
1966,4785,1144
1967,4678,1091
1968,4766,1125
1969,4811,1192
1970,4736,1230
1971,4623,1192
1972,4750,1157
1973,4406,1235
1974,4464,1130
1975,4538,1175
1976,4764,1036
1977,4636,1299
1978,4976,1245
1979,4810,1123
1980,4718,1321
1981,4529,1221
1982,4637,1153
1983,4642,1254
1984,4518,1230
1985,4646,1223
1986,4274,1272
1987,4329,1280
1988,4612,1299
1989,4662,1188
1990,4008,1290
1991,4182,1347
1992,4392,1078
1993,4657,1232
1994,4428,1251
1995,4465,1314
1996,4629,1223
1997,4479,1190
1998,3949,1449
1999,4108,1329
2000,4376,1285
2001,4156,1297
2002,4266,1401
2003,4441,1304
2004,4260,1247
2005,4272,1409
2006,3979,1387
2007,4211,1410
2008,4436,1299
2009,4433,1259
2010,4429,1468
2011,4280,1482
2012,3739,1502
2013,4444,1312
2014,4535,1298
2015,4078,1483
2016,3879,1549
2017,3833,1418
2018,4292,1571
2019,4327,1484
2020,3920,1503
2021,3945,1474
2022,4268,1530
2023,3828,1444