# Heating degree days in Indiana

Heating degree days in Indiana was 5,589 degree days (base 65°F) in 2025. Source: NOAA National Centers for Environmental Information.

- Indicator id: `heating_degree_days_annual`
- Place id: `us-state-18`
- 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/12/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/12/hdd/12/12/1895-2025/data.json. Retrieved 2026-10-12.
- Web page: https://invokely.ai/en/heating-degree-days/indiana
- API: https://invokely.ai/api/v1/series?indicator=heating_degree_days_annual&place=us-state-18

| Period | degree days (base 65°F) |
|---|---:|
| 2025 | 5,589 |
| 2024 | 4,731 |
| 2023 | 4,821 |
| 2022 | 5,746 |
| 2021 | 5,273 |
| 2020 | 5,279 |
| 2019 | 5,725 |
| 2018 | 5,801 |
| 2017 | 4,986 |
| 2016 | 5,133 |
| 2015 | 5,605 |
| 2014 | 6,563 |
| 2013 | 5,961 |
| 2012 | 4,832 |
| 2011 | 5,494 |
| 2010 | 5,779 |
| 2009 | 5,822 |
| 2008 | 6,038 |
| 2007 | 5,459 |
| 2006 | 5,147 |
| 2005 | 5,617 |
| 2004 | 5,524 |
| 2003 | 5,913 |
| 2002 | 5,529 |
| 2001 | 5,259 |
| 2000 | 5,810 |
| 1999 | 5,412 |
| 1998 | 4,782 |
| 1997 | 6,084 |
| 1996 | 6,312 |
| 1995 | 6,040 |
| 1994 | 5,786 |
| 1993 | 6,131 |
| 1992 | 5,677 |
| 1991 | 5,334 |
| 1990 | 5,116 |
| 1989 | 6,262 |
| 1988 | 6,154 |
| 1987 | 5,443 |
| 1986 | 5,627 |
| 1985 | 5,964 |
| 1984 | 5,960 |
| 1983 | 5,981 |
| 1982 | 6,067 |
| 1981 | 6,087 |
| 1980 | 6,369 |
| 1979 | 6,549 |
| 1978 | 6,765 |
| 1977 | 6,199 |
| 1976 | 6,260 |
| 1975 | 5,721 |
| 1974 | 5,812 |
| 1973 | 5,432 |
| 1972 | 6,269 |
| 1971 | 5,846 |
| 1970 | 6,109 |
| 1969 | 6,309 |
| 1968 | 6,127 |
| 1967 | 6,074 |
| 1966 | 6,301 |
| 1965 | 5,825 |
| 1964 | 5,755 |
| 1963 | 6,445 |
| 1962 | 6,238 |
| 1961 | 6,065 |
| 1960 | 6,368 |
| 1959 | 5,917 |
| 1958 | 6,436 |
| 1957 | 5,843 |
| 1956 | 5,636 |
| 1955 | 5,851 |
| 1954 | 5,499 |
| 1953 | 5,407 |
| 1952 | 5,689 |
| 1951 | 6,214 |
| 1950 | 6,252 |
| 1949 | 5,451 |
| 1948 | 5,899 |
| 1947 | 6,234 |
| 1946 | 5,111 |
| 1945 | 6,061 |
| 1944 | 5,876 |
| 1943 | 6,296 |
| 1942 | 5,896 |
| 1941 | 5,568 |
| 1940 | 6,452 |
| 1939 | 5,587 |
| 1938 | 5,256 |
| 1937 | 6,294 |
| 1936 | 6,341 |
| 1935 | 6,058 |
| 1934 | 5,927 |
| 1933 | 5,561 |
| 1932 | 5,832 |
| 1931 | 5,144 |
| 1930 | 5,825 |
| 1929 | 6,310 |
| 1928 | 6,058 |
| 1927 | 5,541 |
| 1926 | 6,450 |
| 1925 | 6,046 |
| 1924 | 6,586 |
| 1923 | 5,887 |
| 1922 | 5,526 |
| 1921 | 5,011 |
| 1920 | 6,177 |
| 1919 | 5,792 |
| 1918 | 6,048 |
| 1917 | 6,908 |
| 1916 | 6,127 |
| 1915 | 5,966 |
| 1914 | 6,166 |
| 1913 | 5,677 |
| 1912 | 6,696 |
| 1911 | 5,750 |
| 1910 | 6,207 |
| 1909 | 6,117 |
| 1908 | 5,705 |
| 1907 | 6,303 |
| 1906 | 5,993 |
| 1905 | 6,313 |
| 1904 | 6,755 |
| 1903 | 6,227 |
| 1902 | 5,975 |
| 1901 | 6,483 |
| 1900 | 5,812 |
| 1899 | 6,060 |
| 1898 | 5,894 |
| 1897 | 5,994 |
| 1896 | 5,809 |
| 1895 | 6,570 |