# Cooling degree days in United States

Cooling degree days in United States was 1,502 degree days (base 65°F) in 2025. Source: NOAA National Centers for Environmental Information.

- Indicator id: `cooling_degree_days_annual`
- Place id: `us`
- Unit: degree days (base 65°F)
- Definition: Sum over January to December of the degrees by which the daily mean temperature exceeds 65°F, a measure of cooling demand. NOAA estimates monthly values from nClimDiv temperatures and weights areas by population (2010 Census).
- Note: NOAA publishes these for operational monitoring; they can differ from official degree day publications.
- Source: NOAA National Centers for Environmental Information, NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide (https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/time-series/110/cdd/12/12/1895-2026/data.json)
- Publisher page: https://invokely.ai/en/publishers/noaa-ncei
- Retrieved: 2026-10-12
- License: Public domain (US government work); NCEI asks users to cite the nClimDiv dataset
- Citation: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/time-series/110/cdd/12/12/1895-2026/data.json. Retrieved 2026-10-12.
- Web page: https://invokely.ai/en/cooling-degree-days/united-states
- API: https://invokely.ai/api/v1/series?indicator=cooling_degree_days_annual&place=us

| Period | degree days (base 65°F) |
|---|---:|
| 2025 | 1,502 |
| 2024 | 1,600 |
| 2023 | 1,446 |
| 2022 | 1,530 |
| 2021 | 1,474 |
| 2020 | 1,503 |
| 2019 | 1,484 |
| 2018 | 1,571 |
| 2017 | 1,418 |
| 2016 | 1,549 |
| 2015 | 1,483 |
| 2014 | 1,298 |
| 2013 | 1,312 |
| 2012 | 1,502 |
| 2011 | 1,482 |
| 2010 | 1,468 |
| 2009 | 1,259 |
| 2008 | 1,299 |
| 2007 | 1,410 |
| 2006 | 1,387 |
| 2005 | 1,409 |
| 2004 | 1,247 |
| 2003 | 1,304 |
| 2002 | 1,401 |
| 2001 | 1,297 |
| 2000 | 1,285 |
| 1999 | 1,329 |
| 1998 | 1,449 |
| 1997 | 1,190 |
| 1996 | 1,223 |
| 1995 | 1,314 |
| 1994 | 1,251 |
| 1993 | 1,232 |
| 1992 | 1,078 |
| 1991 | 1,347 |
| 1990 | 1,290 |
| 1989 | 1,188 |
| 1988 | 1,299 |
| 1987 | 1,280 |
| 1986 | 1,272 |
| 1985 | 1,223 |
| 1984 | 1,230 |
| 1983 | 1,254 |
| 1982 | 1,153 |
| 1981 | 1,221 |
| 1980 | 1,321 |
| 1979 | 1,123 |
| 1978 | 1,245 |
| 1977 | 1,299 |
| 1976 | 1,036 |
| 1975 | 1,175 |
| 1974 | 1,130 |
| 1973 | 1,235 |
| 1972 | 1,157 |
| 1971 | 1,192 |
| 1970 | 1,230 |
| 1969 | 1,192 |
| 1968 | 1,125 |
| 1967 | 1,091 |
| 1966 | 1,144 |
| 1965 | 1,153 |
| 1964 | 1,187 |
| 1963 | 1,208 |
| 1962 | 1,187 |
| 1961 | 1,153 |
| 1960 | 1,200 |
| 1959 | 1,317 |
| 1958 | 1,187 |
| 1957 | 1,211 |
| 1956 | 1,212 |
| 1955 | 1,303 |
| 1954 | 1,300 |
| 1953 | 1,298 |
| 1952 | 1,295 |
| 1951 | 1,194 |
| 1950 | 1,104 |
| 1949 | 1,290 |
| 1948 | 1,223 |
| 1947 | 1,252 |
| 1946 | 1,157 |
| 1945 | 1,174 |
| 1944 | 1,253 |
| 1943 | 1,263 |
| 1942 | 1,168 |
| 1941 | 1,252 |
| 1940 | 1,110 |
| 1939 | 1,328 |
| 1938 | 1,255 |
| 1937 | 1,266 |
| 1936 | 1,382 |
| 1935 | 1,210 |
| 1934 | 1,392 |
| 1933 | 1,359 |
| 1932 | 1,222 |
| 1931 | 1,352 |
| 1930 | 1,244 |
| 1929 | 1,153 |
| 1928 | 1,125 |
| 1927 | 1,138 |
| 1926 | 1,178 |
| 1925 | 1,298 |
| 1924 | 1,077 |
| 1923 | 1,138 |
| 1922 | 1,265 |
| 1921 | 1,348 |
| 1920 | 1,076 |
| 1919 | 1,218 |
| 1918 | 1,205 |
| 1917 | 1,060 |
| 1916 | 1,149 |
| 1915 | 1,072 |
| 1914 | 1,182 |
| 1913 | 1,162 |
| 1912 | 1,110 |
| 1911 | 1,307 |
| 1910 | 1,141 |
| 1909 | 1,138 |
| 1908 | 1,173 |
| 1907 | 1,082 |
| 1906 | 1,198 |
| 1905 | 1,190 |
| 1904 | 1,082 |
| 1903 | 1,010 |
| 1902 | 1,170 |
| 1901 | 1,251 |
| 1900 | 1,315 |
| 1899 | 1,244 |
| 1898 | 1,264 |
| 1897 | 1,209 |
| 1896 | 1,280 |
| 1895 | 1,149 |