1,540
2025 (latest)
COOLING DEGREE DAYS
degree days · 1949–2025 · neither direction is "better" · U.S. Energy Information Administration, Monthly Energy Review
1,103
1949
1,633
high · 2024
873
low · 1950
+40%
since 1949
┊ dashed lines mark 1979 Oil shock & inflation peak · 1987 Black Monday crash · 1991 Gulf War recession · 2001 Dot-com bust & 9/11 · 2008 Global financial crisis · 2020 COVID-19 pandemic
Method & caveats. MSN ZWCDPUS; publisher annual row (MER YYYY13). Original unit: Number. Converted only by the declared unit scale. Population weights re-based after each decennial census (most recently 2020); weight changes affect comparability. Breaks: Population weights re-based after each decennial census (most recently 2020); weight changes affect comparability.
Sources
Every value on this page is read from the publisher below. Current and historical source documents:
- https://api.eia.gov/v2/total-energy/data/?frequency=annual&data%5B0%5D=value&facets%5Bmsn%5D%5B%5D=ZWCDPUS&length=5000&sort%5B0%5D%5Bcolumn%5D=period&sort%5B0%5D%5Bdirection%5D=asc
- https://github.com/danielmiessler/substrate/tree/main/Data/US-Energy-And-Environment
Data
| Year | Cooling degree days | Change |
|---|---|---|
| 2025 | 1,540 | −6% |
| 2024 | 1,633 | +10% |
| 2023 | 1,480 | −5% |
| 2022 | 1,557 | +4% |
| 2021 | 1,492 | −2% |
| 2020 | 1,519 | +2% |
| 2019 | 1,495 | −5% |
| 2018 | 1,579 | +11% |
| 2017 | 1,423 | −8% |
| 2016 | 1,554 | +5% |
| 2015 | 1,484 | +15% |
| 2014 | 1,295 | −1% |
| 2013 | 1,304 | −13% |
| 2012 | 1,494 | +2% |
| 2011 | 1,470 | +1% |
| 2010 | 1,457 | +17% |
| 2009 | 1,242 | −3% |
| 2008 | 1,284 | −8% |
| 2007 | 1,393 | +2% |
| 2006 | 1,361 | −2% |
| 2005 | 1,390 | +14% |
| 2004 | 1,218 | −4% |
| 2003 | 1,269 | −7% |
| 2002 | 1,365 | +9% |
| 2001 | 1,256 | +2% |
| 2000 | 1,233 | −4% |
| 1999 | 1,283 | −8% |
| 1998 | 1,391 | +23% |
| 1997 | 1,134 | −2% |
| 1996 | 1,162 | −8% |
| 1995 | 1,262 | +6% |
| 1994 | 1,185 | +1% |
| 1993 | 1,169 | +17% |
| 1992 | 1,001 | −22% |
| 1991 | 1,282 | +7% |
| 1990 | 1,201 | +9% |
| 1989 | 1,103 | −11% |
| 1988 | 1,233 | +2% |
| 1987 | 1,209 | +2% |
| 1986 | 1,182 | +5% |
| 1985 | 1,122 | −2% |
| 1984 | 1,141 | −3% |
| 1983 | 1,179 | +13% |
| 1982 | 1,048 | −6% |
| 1981 | 1,109 | −9% |
| 1980 | 1,216 | +21% |
| 1979 | 1,005 | −10% |
| 1978 | 1,114 | −5% |
| 1977 | 1,172 | +27% |
| 1976 | 923 | −12% |
| 1975 | 1,052 | +7% |
| 1974 | 983 | −11% |
| 1973 | 1,108 | +12% |
| 1972 | 991 | −5% |
| 1971 | 1,038 | −4% |
| 1970 | 1,082 | +6% |
| 1969 | 1,022 | +4% |
| 1968 | 979 | +8% |
| 1967 | 904 | −8% |
| 1966 | 984 | +0% |
| 1965 | 981 | −3% |
| 1964 | 1,011 | −0% |
| 1963 | 1,015 | +2% |
| 1962 | 996 | +1% |
| 1961 | 982 | −2% |
| 1960 | 1,002 | −12% |
| 1959 | 1,144 | +19% |
| 1958 | 965 | −5% |
| 1957 | 1,019 | +2% |
| 1956 | 1,000 | −13% |
| 1955 | 1,145 | +5% |
| 1954 | 1,088 | −2% |
| 1953 | 1,108 | −0% |
| 1952 | 1,111 | +14% |
| 1951 | 975 | +12% |
| 1950 | 873 | −21% |
| 1949 | 1,103 | — |
Also in Energy