# Cooling degree days in Colorado

Cooling degree days in Colorado was 348 degree days (base 65°F) in 2025. Source: NOAA National Centers for Environmental Information.

- Indicator id: `cooling_degree_days_annual`
- Place id: `us-state-08`
- 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/statewide/time-series/5/cdd/12/12/1895-2025/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/statewide/time-series/5/cdd/12/12/1895-2025/data.json. Retrieved 2026-10-12.
- Web page: https://invokely.ai/en/cooling-degree-days/colorado
- API: https://invokely.ai/api/v1/series?indicator=cooling_degree_days_annual&place=us-state-08

| Period | degree days (base 65°F) |
|---|---:|
| 2025 | 348 |
| 2024 | 429 |
| 2023 | 298 |
| 2022 | 444 |
| 2021 | 428 |
| 2020 | 452 |
| 2019 | 372 |
| 2018 | 395 |
| 2017 | 318 |
| 2016 | 358 |
| 2015 | 338 |
| 2014 | 261 |
| 2013 | 365 |
| 2012 | 498 |
| 2011 | 424 |
| 2010 | 351 |
| 2009 | 186 |
| 2008 | 297 |
| 2007 | 405 |
| 2006 | 374 |
| 2005 | 330 |
| 2004 | 159 |
| 2003 | 412 |
| 2002 | 445 |
| 2001 | 398 |
| 2000 | 418 |
| 1999 | 266 |
| 1998 | 319 |
| 1997 | 262 |
| 1996 | 272 |
| 1995 | 264 |
| 1994 | 366 |
| 1993 | 168 |
| 1992 | 141 |
| 1991 | 245 |
| 1990 | 267 |
| 1989 | 247 |
| 1988 | 340 |
| 1987 | 239 |
| 1986 | 251 |
| 1985 | 245 |
| 1984 | 269 |
| 1983 | 318 |
| 1982 | 236 |
| 1981 | 288 |
| 1980 | 360 |
| 1979 | 211 |
| 1978 | 263 |
| 1977 | 333 |
| 1976 | 230 |
| 1975 | 209 |
| 1974 | 224 |
| 1973 | 205 |
| 1972 | 201 |
| 1971 | 222 |
| 1970 | 272 |
| 1969 | 291 |
| 1968 | 185 |
| 1967 | 151 |
| 1966 | 294 |
| 1965 | 160 |
| 1964 | 277 |
| 1963 | 355 |
| 1962 | 197 |
| 1961 | 208 |
| 1960 | 257 |
| 1959 | 270 |
| 1958 | 253 |
| 1957 | 225 |
| 1956 | 276 |
| 1955 | 290 |
| 1954 | 382 |
| 1953 | 306 |
| 1952 | 326 |
| 1951 | 193 |
| 1950 | 133 |
| 1949 | 215 |
| 1948 | 255 |
| 1947 | 261 |
| 1946 | 270 |
| 1945 | 187 |
| 1944 | 214 |
| 1943 | 315 |
| 1942 | 207 |
| 1941 | 177 |
| 1940 | 307 |
| 1939 | 312 |
| 1938 | 272 |
| 1937 | 349 |
| 1936 | 401 |
| 1935 | 300 |
| 1934 | 418 |
| 1933 | 351 |
| 1932 | 286 |
| 1931 | 359 |
| 1930 | 236 |
| 1929 | 233 |
| 1928 | 136 |
| 1927 | 129 |
| 1926 | 196 |
| 1925 | 219 |
| 1924 | 196 |
| 1923 | 169 |
| 1922 | 294 |
| 1921 | 219 |
| 1920 | 149 |
| 1919 | 297 |
| 1918 | 242 |
| 1917 | 184 |
| 1916 | 212 |
| 1915 | 78 |
| 1914 | 222 |
| 1913 | 229 |
| 1912 | 127 |
| 1911 | 215 |
| 1910 | 261 |
| 1909 | 252 |
| 1908 | 164 |
| 1907 | 171 |
| 1906 | 114 |
| 1905 | 207 |
| 1904 | 129 |
| 1903 | 171 |
| 1902 | 199 |
| 1901 | 335 |
| 1900 | 252 |
| 1899 | 221 |
| 1898 | 246 |
| 1897 | 223 |
| 1896 | 251 |
| 1895 | 128 |