# Heating degree days in Louisiana

Heating degree days in Louisiana was 1,442 degree days (base 65°F) in 2025. Source: NOAA National Centers for Environmental Information.

- Indicator id: `heating_degree_days_annual`
- Place id: `us-state-22`
- 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/16/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/16/hdd/12/12/1895-2025/data.json. Retrieved 2026-10-12.
- Web page: https://invokely.ai/en/heating-degree-days/louisiana
- API: https://invokely.ai/api/v1/series?indicator=heating_degree_days_annual&place=us-state-22

| Period | degree days (base 65°F) |
|---|---:|
| 2025 | 1,442 |
| 2024 | 1,308 |
| 2023 | 1,260 |
| 2022 | 1,686 |
| 2021 | 1,510 |
| 2020 | 1,336 |
| 2019 | 1,584 |
| 2018 | 1,681 |
| 2017 | 1,166 |
| 2016 | 1,367 |
| 2015 | 1,516 |
| 2014 | 2,088 |
| 2013 | 1,807 |
| 2012 | 1,276 |
| 2011 | 1,685 |
| 2010 | 2,209 |
| 2009 | 1,675 |
| 2008 | 1,669 |
| 2007 | 1,557 |
| 2006 | 1,486 |
| 2005 | 1,576 |
| 2004 | 1,647 |
| 2003 | 1,849 |
| 2002 | 1,793 |
| 2001 | 1,652 |
| 2000 | 1,725 |
| 1999 | 1,458 |
| 1998 | 1,510 |
| 1997 | 1,821 |
| 1996 | 1,794 |
| 1995 | 1,730 |
| 1994 | 1,628 |
| 1993 | 1,945 |
| 1992 | 1,723 |
| 1991 | 1,655 |
| 1990 | 1,387 |
| 1989 | 1,879 |
| 1988 | 1,894 |
| 1987 | 1,845 |
| 1986 | 1,641 |
| 1985 | 1,906 |
| 1984 | 1,717 |
| 1983 | 2,207 |
| 1982 | 1,611 |
| 1981 | 1,940 |
| 1980 | 2,026 |
| 1979 | 2,216 |
| 1978 | 2,285 |
| 1977 | 2,045 |
| 1976 | 2,107 |
| 1975 | 1,671 |
| 1974 | 1,538 |
| 1973 | 1,819 |
| 1972 | 1,703 |
| 1971 | 1,621 |
| 1970 | 2,049 |
| 1969 | 1,993 |
| 1968 | 2,242 |
| 1967 | 1,735 |
| 1966 | 2,035 |
| 1965 | 1,679 |
| 1964 | 1,913 |
| 1963 | 2,189 |
| 1962 | 1,930 |
| 1961 | 1,868 |
| 1960 | 2,162 |
| 1959 | 1,969 |
| 1958 | 2,257 |
| 1957 | 1,504 |
| 1956 | 1,578 |
| 1955 | 1,644 |
| 1954 | 1,614 |
| 1953 | 1,680 |
| 1952 | 1,748 |
| 1951 | 1,694 |
| 1950 | 1,608 |
| 1949 | 1,493 |
| 1948 | 1,820 |
| 1947 | 2,051 |
| 1946 | 1,466 |
| 1945 | 1,616 |
| 1944 | 1,691 |
| 1943 | 1,920 |
| 1942 | 1,927 |
| 1941 | 1,916 |
| 1940 | 2,137 |
| 1939 | 1,566 |
| 1938 | 1,527 |
| 1937 | 1,808 |
| 1936 | 1,903 |
| 1935 | 1,674 |
| 1934 | 1,660 |
| 1933 | 1,293 |
| 1932 | 1,685 |
| 1931 | 1,664 |
| 1930 | 1,891 |
| 1929 | 1,844 |
| 1928 | 1,870 |
| 1927 | 1,304 |
| 1926 | 1,866 |
| 1925 | 1,697 |
| 1924 | 1,965 |
| 1923 | 1,560 |
| 1922 | 1,357 |
| 1921 | 1,186 |
| 1920 | 1,931 |
| 1919 | 1,695 |
| 1918 | 1,724 |
| 1917 | 1,915 |
| 1916 | 1,593 |
| 1915 | 1,993 |
| 1914 | 2,021 |
| 1913 | 1,672 |
| 1912 | 2,147 |
| 1911 | 1,311 |
| 1910 | 1,734 |
| 1909 | 1,615 |
| 1908 | 1,543 |
| 1907 | 1,440 |
| 1906 | 1,830 |
| 1905 | 2,173 |
| 1904 | 1,785 |
| 1903 | 2,029 |
| 1902 | 1,886 |
| 1901 | 2,058 |
| 1900 | 1,842 |
| 1899 | 2,001 |
| 1898 | 1,900 |
| 1897 | 1,622 |
| 1896 | 1,779 |
| 1895 | 2,225 |