Data / Heating degree days / Oklahoma

Heating degree days in Oklahoma

Heating degree days in Oklahoma was 3,171 degree days (base 65°F) in 2025, according to NOAA National Centers for Environmental Information. That is up 9% from 2024. That is the 37th highest of 48 states in 2025.

2025, degree days (base 65°F)3,171
Change on 2024+9%
Rank37th of 48US states ranked
Series high4,4181978
Series low2,8682012

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

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Heating degree days in Oklahoma, 1895 to 2025

2,5003,0003,5004,0004,500189519141933195219711990200920251895: 4,394 degree days (base 65°F)1896: 3,691 degree days (base 65°F)1897: 3,826 degree days (base 65°F)1898: 3,956 degree days (base 65°F)1899: 4,118 degree days (base 65°F)1900: 3,564 degree days (base 65°F)1901: 3,797 degree days (base 65°F)1902: 3,874 degree days (base 65°F)1903: 4,018 degree days (base 65°F)1904: 3,539 degree days (base 65°F)1905: 4,285 degree days (base 65°F)1906: 3,866 degree days (base 65°F)1907: 3,496 degree days (base 65°F)1908: 3,349 degree days (base 65°F)1909: 3,666 degree days (base 65°F)1910: 3,502 degree days (base 65°F)1911: 3,425 degree days (base 65°F)1912: 4,274 degree days (base 65°F)1913: 3,907 degree days (base 65°F)1914: 3,803 degree days (base 65°F)1915: 3,713 degree days (base 65°F)1916: 3,804 degree days (base 65°F)1917: 4,134 degree days (base 65°F)1918: 3,912 degree days (base 65°F)1919: 3,920 degree days (base 65°F)1920: 3,804 degree days (base 65°F)1921: 3,020 degree days (base 65°F)1922: 3,514 degree days (base 65°F)1923: 3,597 degree days (base 65°F)1924: 4,162 degree days (base 65°F)1925: 3,602 degree days (base 65°F)1926: 3,760 degree days (base 65°F)1927: 3,342 degree days (base 65°F)1928: 3,474 degree days (base 65°F)1929: 4,079 degree days (base 65°F)1930: 3,854 degree days (base 65°F)1931: 3,303 degree days (base 65°F)1932: 3,733 degree days (base 65°F)1933: 3,121 degree days (base 65°F)1934: 3,393 degree days (base 65°F)1935: 3,595 degree days (base 65°F)1936: 3,847 degree days (base 65°F)1937: 4,185 degree days (base 65°F)1938: 3,142 degree days (base 65°F)1939: 3,288 degree days (base 65°F)1940: 4,046 degree days (base 65°F)1941: 3,528 degree days (base 65°F)1942: 3,620 degree days (base 65°F)1943: 3,813 degree days (base 65°F)1944: 3,657 degree days (base 65°F)1945: 3,685 degree days (base 65°F)1946: 3,042 degree days (base 65°F)1947: 3,944 degree days (base 65°F)1948: 4,003 degree days (base 65°F)1949: 3,891 degree days (base 65°F)1950: 3,742 degree days (base 65°F)1951: 3,907 degree days (base 65°F)1952: 3,658 degree days (base 65°F)1953: 3,376 degree days (base 65°F)1954: 3,259 degree days (base 65°F)1955: 3,644 degree days (base 65°F)1956: 3,567 degree days (base 65°F)1957: 3,851 degree days (base 65°F)1958: 4,098 degree days (base 65°F)1959: 3,912 degree days (base 65°F)1960: 4,144 degree days (base 65°F)1961: 3,873 degree days (base 65°F)1962: 3,788 degree days (base 65°F)1963: 3,817 degree days (base 65°F)1964: 3,665 degree days (base 65°F)1965: 3,492 degree days (base 65°F)1966: 3,920 degree days (base 65°F)1967: 3,500 degree days (base 65°F)1968: 4,021 degree days (base 65°F)1969: 3,944 degree days (base 65°F)1970: 3,974 degree days (base 65°F)1971: 3,672 degree days (base 65°F)1972: 3,909 degree days (base 65°F)1973: 3,732 degree days (base 65°F)1974: 3,573 degree days (base 65°F)1975: 3,799 degree days (base 65°F)1976: 3,807 degree days (base 65°F)1977: 3,658 degree days (base 65°F)1978: 4,418 degree days (base 65°F)1979: 4,384 degree days (base 65°F)1980: 3,852 degree days (base 65°F)1981: 3,510 degree days (base 65°F)1982: 3,844 degree days (base 65°F)1983: 4,298 degree days (base 65°F)1984: 3,771 degree days (base 65°F)1985: 4,112 degree days (base 65°F)1986: 3,429 degree days (base 65°F)1987: 3,655 degree days (base 65°F)1988: 3,865 degree days (base 65°F)1989: 3,975 degree days (base 65°F)1990: 3,360 degree days (base 65°F)1991: 3,502 degree days (base 65°F)1992: 3,394 degree days (base 65°F)1993: 4,170 degree days (base 65°F)1994: 3,610 degree days (base 65°F)1995: 3,628 degree days (base 65°F)1996: 3,888 degree days (base 65°F)1997: 3,830 degree days (base 65°F)1998: 3,382 degree days (base 65°F)1999: 3,082 degree days (base 65°F)2000: 3,703 degree days (base 65°F)2001: 3,494 degree days (base 65°F)2002: 3,748 degree days (base 65°F)2003: 3,613 degree days (base 65°F)2004: 3,343 degree days (base 65°F)2005: 3,358 degree days (base 65°F)2006: 3,018 degree days (base 65°F)2007: 3,541 degree days (base 65°F)2008: 3,675 degree days (base 65°F)2009: 3,681 degree days (base 65°F)2010: 3,777 degree days (base 65°F)2011: 3,595 degree days (base 65°F)2012: 2,868 degree days (base 65°F)2013: 4,000 degree days (base 65°F)2014: 3,949 degree days (base 65°F)2015: 3,414 degree days (base 65°F)2016: 3,039 degree days (base 65°F)2017: 2,922 degree days (base 65°F)2018: 3,827 degree days (base 65°F)2019: 3,742 degree days (base 65°F)2020: 3,264 degree days (base 65°F)2021: 3,346 degree days (base 65°F)2022: 3,669 degree days (base 65°F)2023: 3,150 degree days (base 65°F)2024: 2,908 degree days (base 65°F)2025: 3,171 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)
20253,171
20242,908
20233,150
20223,669
20213,346
20203,264
20193,742
20183,827
20172,922
20163,039
20153,414
20143,949
20134,000
20122,868
20113,595
20103,777
20093,681
20083,675
20073,541
20063,018
20053,358
20043,343
20033,613
20023,748
20013,494
20003,703
19993,082
19983,382
19973,830
19963,888
19953,628
19943,610
19934,170
19923,394
19913,502
19903,360
19893,975
19883,865
19873,655
19863,429
19854,112
19843,771
19834,298
19823,844
19813,510
19803,852
19794,384
19784,418
19773,658
19763,807
19753,799
19743,573
19733,732
19723,909
19713,672
19703,974
19693,944
19684,021
19673,500
19663,920
19653,492
19643,665
19633,817
19623,788
19613,873
19604,144
19593,912
19584,098
19573,851
19563,567
19553,644
19543,259
19533,376
19523,658
19513,907
19503,742
19493,891
19484,003
19473,944
19463,042
19453,685
19443,657
19433,813
19423,620
19413,528
19404,046
19393,288
19383,142
19374,185
19363,847
19353,595
19343,393
19333,121
19323,733
19313,303
19303,854
19294,079
19283,474
19273,342
19263,760
19253,602
19244,162
19233,597
19223,514
19213,020
19203,804
19193,920
19183,912
19174,134
19163,804
19153,713
19143,803
19133,907
19124,274
19113,425
19103,502
19093,666
19083,349
19073,496
19063,866
19054,285
19043,539
19034,018
19023,874
19013,797
19003,564
18994,118
18983,956
18973,826
18963,691
18954,394

Compared with United States

Place2025
Oklahoma3,171
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/34/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, Oklahoma, 1895 to 2025) [Data set]. Retrieved October 12, 2026, from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/34/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, Oklahoma, 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/34/hdd/12/12/1895-2025/data.json. Invokely, https://invokely.ai/en/heating-degree-days/oklahoma. 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, Oklahoma, 1895 to 2025. Dataset. Accessed October 12, 2026. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/34/hdd/12/12/1895-2025/data.json. Also distributed by Invokely, https://invokely.ai/en/heating-degree-days/oklahoma.

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, Oklahoma, 1895 to 2025 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/34/hdd/12/12/1895-2025/data.json, via Invokely: https://invokely.ai/en/heating-degree-days/oklahoma (Accessed: 12 October 2026).

BibTeX
@misc{noaa_heating_degree_days_oklahoma_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, Oklahoma, 1895 to 2025}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/34/hdd/12/12/1895-2025/data.json},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/en/heating-degree-days/oklahoma. 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/34/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, Oklahoma, 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/34/hdd/12/12/1895-2025/data.json
L2  - https://invokely.ai/en/heating-degree-days/oklahoma
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/heating-degree-days/oklahoma.
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/34/hdd/12/12/1895-2025/data.json. Retrieved 2026-10-12.
ER  -
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Questions

What is the heating degree days in Oklahoma?

Heating degree days in Oklahoma was 3,171 degree days (base 65°F) in 2025, according to NOAA National Centers for Environmental Information. That is up 9% from 2024. That is the 37th 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 Oklahoma?

4,418 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 Oklahoma

All statistics for Oklahoma | Oklahoma in figures