Data / Heating degree days / Louisiana

Heating degree days in Louisiana

Heating degree days in Louisiana was 1,442 degree days (base 65°F) in 2025, according to NOAA National Centers for Environmental Information. That is up 10.2% from 2024. That is the 47th highest of 48 states in 2025.

2025, degree days (base 65°F)1,442
Change on 2024+10.2%
Rank47th of 48US states ranked
Series high2,2851978
Series low1,1662017

Next release: Wednesday, 6 October 2027, estimated by Invokely from past publication dates (low confidence), not announced by the publisher. Release calendar

Get an email when a new figure is out or this one is revised.

Heating degree days in Louisiana, 1895 to 2025

1,0001,2501,5001,7502,0002,2502,500189519141933195219711990200920251895: 2,225 degree days (base 65°F)1896: 1,779 degree days (base 65°F)1897: 1,622 degree days (base 65°F)1898: 1,900 degree days (base 65°F)1899: 2,001 degree days (base 65°F)1900: 1,842 degree days (base 65°F)1901: 2,058 degree days (base 65°F)1902: 1,886 degree days (base 65°F)1903: 2,029 degree days (base 65°F)1904: 1,785 degree days (base 65°F)1905: 2,173 degree days (base 65°F)1906: 1,830 degree days (base 65°F)1907: 1,440 degree days (base 65°F)1908: 1,543 degree days (base 65°F)1909: 1,615 degree days (base 65°F)1910: 1,734 degree days (base 65°F)1911: 1,311 degree days (base 65°F)1912: 2,147 degree days (base 65°F)1913: 1,672 degree days (base 65°F)1914: 2,021 degree days (base 65°F)1915: 1,993 degree days (base 65°F)1916: 1,593 degree days (base 65°F)1917: 1,915 degree days (base 65°F)1918: 1,724 degree days (base 65°F)1919: 1,695 degree days (base 65°F)1920: 1,931 degree days (base 65°F)1921: 1,186 degree days (base 65°F)1922: 1,357 degree days (base 65°F)1923: 1,560 degree days (base 65°F)1924: 1,965 degree days (base 65°F)1925: 1,697 degree days (base 65°F)1926: 1,866 degree days (base 65°F)1927: 1,304 degree days (base 65°F)1928: 1,870 degree days (base 65°F)1929: 1,844 degree days (base 65°F)1930: 1,891 degree days (base 65°F)1931: 1,664 degree days (base 65°F)1932: 1,685 degree days (base 65°F)1933: 1,293 degree days (base 65°F)1934: 1,660 degree days (base 65°F)1935: 1,674 degree days (base 65°F)1936: 1,903 degree days (base 65°F)1937: 1,808 degree days (base 65°F)1938: 1,527 degree days (base 65°F)1939: 1,566 degree days (base 65°F)1940: 2,137 degree days (base 65°F)1941: 1,916 degree days (base 65°F)1942: 1,927 degree days (base 65°F)1943: 1,920 degree days (base 65°F)1944: 1,691 degree days (base 65°F)1945: 1,616 degree days (base 65°F)1946: 1,466 degree days (base 65°F)1947: 2,051 degree days (base 65°F)1948: 1,820 degree days (base 65°F)1949: 1,493 degree days (base 65°F)1950: 1,608 degree days (base 65°F)1951: 1,694 degree days (base 65°F)1952: 1,748 degree days (base 65°F)1953: 1,680 degree days (base 65°F)1954: 1,614 degree days (base 65°F)1955: 1,644 degree days (base 65°F)1956: 1,578 degree days (base 65°F)1957: 1,504 degree days (base 65°F)1958: 2,257 degree days (base 65°F)1959: 1,969 degree days (base 65°F)1960: 2,162 degree days (base 65°F)1961: 1,868 degree days (base 65°F)1962: 1,930 degree days (base 65°F)1963: 2,189 degree days (base 65°F)1964: 1,913 degree days (base 65°F)1965: 1,679 degree days (base 65°F)1966: 2,035 degree days (base 65°F)1967: 1,735 degree days (base 65°F)1968: 2,242 degree days (base 65°F)1969: 1,993 degree days (base 65°F)1970: 2,049 degree days (base 65°F)1971: 1,621 degree days (base 65°F)1972: 1,703 degree days (base 65°F)1973: 1,819 degree days (base 65°F)1974: 1,538 degree days (base 65°F)1975: 1,671 degree days (base 65°F)1976: 2,107 degree days (base 65°F)1977: 2,045 degree days (base 65°F)1978: 2,285 degree days (base 65°F)1979: 2,216 degree days (base 65°F)1980: 2,026 degree days (base 65°F)1981: 1,940 degree days (base 65°F)1982: 1,611 degree days (base 65°F)1983: 2,207 degree days (base 65°F)1984: 1,717 degree days (base 65°F)1985: 1,906 degree days (base 65°F)1986: 1,641 degree days (base 65°F)1987: 1,845 degree days (base 65°F)1988: 1,894 degree days (base 65°F)1989: 1,879 degree days (base 65°F)1990: 1,387 degree days (base 65°F)1991: 1,655 degree days (base 65°F)1992: 1,723 degree days (base 65°F)1993: 1,945 degree days (base 65°F)1994: 1,628 degree days (base 65°F)1995: 1,730 degree days (base 65°F)1996: 1,794 degree days (base 65°F)1997: 1,821 degree days (base 65°F)1998: 1,510 degree days (base 65°F)1999: 1,458 degree days (base 65°F)2000: 1,725 degree days (base 65°F)2001: 1,652 degree days (base 65°F)2002: 1,793 degree days (base 65°F)2003: 1,849 degree days (base 65°F)2004: 1,647 degree days (base 65°F)2005: 1,576 degree days (base 65°F)2006: 1,486 degree days (base 65°F)2007: 1,557 degree days (base 65°F)2008: 1,669 degree days (base 65°F)2009: 1,675 degree days (base 65°F)2010: 2,209 degree days (base 65°F)2011: 1,685 degree days (base 65°F)2012: 1,276 degree days (base 65°F)2013: 1,807 degree days (base 65°F)2014: 2,088 degree days (base 65°F)2015: 1,516 degree days (base 65°F)2016: 1,367 degree days (base 65°F)2017: 1,166 degree days (base 65°F)2018: 1,681 degree days (base 65°F)2019: 1,584 degree days (base 65°F)2020: 1,336 degree days (base 65°F)2021: 1,510 degree days (base 65°F)2022: 1,686 degree days (base 65°F)2023: 1,260 degree days (base 65°F)2024: 1,308 degree days (base 65°F)2025: 1,442 degree days (base 65°F)
degree days (base 65°F). Source: NOAA NCEI, NOAA Climate at a Glance, January to December heating degree days (base 65°F), contiguous US and statewide. Retrieved 2026-10-12, published 2026-10-06.
All 131 values
Perioddegree days (base 65°F)
20251,442
20241,308
20231,260
20221,686
20211,510
20201,336
20191,584
20181,681
20171,166
20161,367
20151,516
20142,088
20131,807
20121,276
20111,685
20102,209
20091,675
20081,669
20071,557
20061,486
20051,576
20041,647
20031,849
20021,793
20011,652
20001,725
19991,458
19981,510
19971,821
19961,794
19951,730
19941,628
19931,945
19921,723
19911,655
19901,387
19891,879
19881,894
19871,845
19861,641
19851,906
19841,717
19832,207
19821,611
19811,940
19802,026
19792,216
19782,285
19772,045
19762,107
19751,671
19741,538
19731,819
19721,703
19711,621
19702,049
19691,993
19682,242
19671,735
19662,035
19651,679
19641,913
19632,189
19621,930
19611,868
19602,162
19591,969
19582,257
19571,504
19561,578
19551,644
19541,614
19531,680
19521,748
19511,694
19501,608
19491,493
19481,820
19472,051
19461,466
19451,616
19441,691
19431,920
19421,927
19411,916
19402,137
19391,566
19381,527
19371,808
19361,903
19351,674
19341,660
19331,293
19321,685
19311,664
19301,891
19291,844
19281,870
19271,304
19261,866
19251,697
19241,965
19231,560
19221,357
19211,186
19201,931
19191,695
19181,724
19171,915
19161,593
19151,993
19142,021
19131,672
19122,147
19111,311
19101,734
19091,615
19081,543
19071,440
19061,830
19052,173
19041,785
19032,029
19021,886
19012,058
19001,842
18992,001
18981,900
18971,622
18961,779
18952,225

Compared with United States

Place2025
Louisiana1,442
United States4,062

Rankings

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).

NOAA publishes these for operational monitoring; they can differ from official degree day publications.

How to cite

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.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

NOAA National Centers for Environmental Information. (2026). NOAA Climate at a Glance, January to December heating degree days (base 65°F), contiguous US and statewide (Heating degree days, Louisiana, 1895 to 2025) [Data set]. Retrieved October 12, 2026, from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/16/hdd/12/12/1895-2025/data.json

MLA 9

NOAA Climate at a Glance, January to December heating degree days (base 65°F), contiguous US and statewide, Heating degree days, Louisiana, 1895 to 2025. NOAA National Centers for Environmental Information, 6 Oct. 2026, https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/16/hdd/12/12/1895-2025/data.json. Invokely, https://invokely.ai/en/heating-degree-days/louisiana. Accessed 12 Oct. 2026.

Chicago (author-date)

NOAA National Centers for Environmental Information. 2026. NOAA Climate at a Glance, January to December heating degree days (base 65°F), contiguous US and statewide. Heating degree days, Louisiana, 1895 to 2025. Dataset. Accessed October 12, 2026. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/16/hdd/12/12/1895-2025/data.json. Also distributed by Invokely, https://invokely.ai/en/heating-degree-days/louisiana.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December heating degree days (base 65°F), contiguous US and statewide, Heating degree days, Louisiana, 1895 to 2025 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/16/hdd/12/12/1895-2025/data.json, via Invokely: https://invokely.ai/en/heating-degree-days/louisiana (Accessed: 12 October 2026).

BibTeX
@misc{noaa_heating_degree_days_louisiana_2025,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December heating degree days (base 65°F), contiguous US and statewide: Heating degree days, Louisiana, 1895 to 2025}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/16/hdd/12/12/1895-2025/data.json},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/en/heating-degree-days/louisiana. Publisher attribution: 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.},
}
RIS
TY  - DATA
AU  - NOAA National Centers for Environmental Information
TI  - NOAA Climate at a Glance, January to December heating degree days (base 65°F), contiguous US and statewide: Heating degree days, Louisiana, 1895 to 2025
PY  - 2026
DA  - 2026/10/06
PB  - NOAA National Centers for Environmental Information
DB  - Invokely
UR  - https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/16/hdd/12/12/1895-2025/data.json
L2  - https://invokely.ai/en/heating-degree-days/louisiana
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/heating-degree-days/louisiana.
N1  - Publisher attribution: 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.
ER  -
Embed this chart

Paste this code into a web page or a blog post. The chart shows the latest figures as they are published, with the source and a link back to this page.

Sites that read oEmbed links, such as WordPress, can show the chart when you paste the link to this page.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

What is the latest heating degree days in Louisiana? Cite the source.
get_value {"indicator":"heating_degree_days_annual","place":"us-state-22"}
GET https://invokely.ai/api/v1/value?indicator=heating_degree_days_annual&place=us-state-22

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

What is the heating degree days in Louisiana?

Heating degree days in Louisiana was 1,442 degree days (base 65°F) in 2025, according to NOAA National Centers for Environmental Information. That is up 10.2% from 2024. That is the 47th highest of 48 states in 2025.

Where does this figure come from?

NOAA National Centers for Environmental Information. NOAA Climate at a Glance, January to December heating degree days (base 65°F), contiguous US and statewide. Retrieved by Invokely on 2026-10-12.

What was the highest heating degree days in Louisiana?

2,285 degree days (base 65°F) in 1978, the highest value since 1895 in this series.

Heating degree days elsewhere in United States

Related statistics for Louisiana

All statistics for Louisiana | Louisiana in figures