# Heating degree days in Oklahoma

Heating degree days in Oklahoma was 3,171 degree days (base 65°F) in 2025. Source: NOAA National Centers for Environmental Information.

- Indicator id: `heating_degree_days_annual`
- Place id: `us-state-40`
- Unit: degree days (base 65°F)
- Definition: Sum over January to December of the degrees by which the daily mean temperature falls below 65°F, a measure of heating 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 heating degree days (base 65°F), contiguous US and statewide (https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/34/hdd/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 heating 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/34/hdd/12/12/1895-2025/data.json. Retrieved 2026-10-12.
- Web page: https://invokely.ai/en/heating-degree-days/oklahoma
- API: https://invokely.ai/api/v1/series?indicator=heating_degree_days_annual&place=us-state-40

| Period | degree days (base 65°F) |
|---|---:|
| 2025 | 3,171 |
| 2024 | 2,908 |
| 2023 | 3,150 |
| 2022 | 3,669 |
| 2021 | 3,346 |
| 2020 | 3,264 |
| 2019 | 3,742 |
| 2018 | 3,827 |
| 2017 | 2,922 |
| 2016 | 3,039 |
| 2015 | 3,414 |
| 2014 | 3,949 |
| 2013 | 4,000 |
| 2012 | 2,868 |
| 2011 | 3,595 |
| 2010 | 3,777 |
| 2009 | 3,681 |
| 2008 | 3,675 |
| 2007 | 3,541 |
| 2006 | 3,018 |
| 2005 | 3,358 |
| 2004 | 3,343 |
| 2003 | 3,613 |
| 2002 | 3,748 |
| 2001 | 3,494 |
| 2000 | 3,703 |
| 1999 | 3,082 |
| 1998 | 3,382 |
| 1997 | 3,830 |
| 1996 | 3,888 |
| 1995 | 3,628 |
| 1994 | 3,610 |
| 1993 | 4,170 |
| 1992 | 3,394 |
| 1991 | 3,502 |
| 1990 | 3,360 |
| 1989 | 3,975 |
| 1988 | 3,865 |
| 1987 | 3,655 |
| 1986 | 3,429 |
| 1985 | 4,112 |
| 1984 | 3,771 |
| 1983 | 4,298 |
| 1982 | 3,844 |
| 1981 | 3,510 |
| 1980 | 3,852 |
| 1979 | 4,384 |
| 1978 | 4,418 |
| 1977 | 3,658 |
| 1976 | 3,807 |
| 1975 | 3,799 |
| 1974 | 3,573 |
| 1973 | 3,732 |
| 1972 | 3,909 |
| 1971 | 3,672 |
| 1970 | 3,974 |
| 1969 | 3,944 |
| 1968 | 4,021 |
| 1967 | 3,500 |
| 1966 | 3,920 |
| 1965 | 3,492 |
| 1964 | 3,665 |
| 1963 | 3,817 |
| 1962 | 3,788 |
| 1961 | 3,873 |
| 1960 | 4,144 |
| 1959 | 3,912 |
| 1958 | 4,098 |
| 1957 | 3,851 |
| 1956 | 3,567 |
| 1955 | 3,644 |
| 1954 | 3,259 |
| 1953 | 3,376 |
| 1952 | 3,658 |
| 1951 | 3,907 |
| 1950 | 3,742 |
| 1949 | 3,891 |
| 1948 | 4,003 |
| 1947 | 3,944 |
| 1946 | 3,042 |
| 1945 | 3,685 |
| 1944 | 3,657 |
| 1943 | 3,813 |
| 1942 | 3,620 |
| 1941 | 3,528 |
| 1940 | 4,046 |
| 1939 | 3,288 |
| 1938 | 3,142 |
| 1937 | 4,185 |
| 1936 | 3,847 |
| 1935 | 3,595 |
| 1934 | 3,393 |
| 1933 | 3,121 |
| 1932 | 3,733 |
| 1931 | 3,303 |
| 1930 | 3,854 |
| 1929 | 4,079 |
| 1928 | 3,474 |
| 1927 | 3,342 |
| 1926 | 3,760 |
| 1925 | 3,602 |
| 1924 | 4,162 |
| 1923 | 3,597 |
| 1922 | 3,514 |
| 1921 | 3,020 |
| 1920 | 3,804 |
| 1919 | 3,920 |
| 1918 | 3,912 |
| 1917 | 4,134 |
| 1916 | 3,804 |
| 1915 | 3,713 |
| 1914 | 3,803 |
| 1913 | 3,907 |
| 1912 | 4,274 |
| 1911 | 3,425 |
| 1910 | 3,502 |
| 1909 | 3,666 |
| 1908 | 3,349 |
| 1907 | 3,496 |
| 1906 | 3,866 |
| 1905 | 4,285 |
| 1904 | 3,539 |
| 1903 | 4,018 |
| 1902 | 3,874 |
| 1901 | 3,797 |
| 1900 | 3,564 |
| 1899 | 4,118 |
| 1898 | 3,956 |
| 1897 | 3,826 |
| 1896 | 3,691 |
| 1895 | 4,394 |