US states by cooling degree days

Florida had the highest cooling degree days of 48 states in 2022, at 3,903 degree days (base 65°F). Vermont had the lowest, at 294 degree days (base 65°F). The median was 958 degree days (base 65°F) and the figure for the United States was 1,530 degree days (base 65°F). Source: NOAA National Centers for Environmental Information.

Highest3,903Florida

Lowest294Vermont

Median95848 states

United States1,530History

Map of states, 2022

Under 490
490 to 750
750 to 960
960 to 1,300
1,300 to 2,000
2,000 and over
No data

degree days (base 65°F), 2022. Hatched areas have no value for this period. Source: NOAA NCEI, NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide. Boundaries: U.S. Census Bureau cartographic boundary files.

All states, 2022

degree days (base 65°F). Source: NOAA NCEI, NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide. Retrieved 2026-10-12.

Full ranking

Rank	States	2022 degree days (base 65°F)	Change on 2021
1	Florida	3,903	+3.9%
2	Texas	3,224	+14.5%
3	Arizona	3,187	+1.1%
4	Louisiana	2,790	+3.2%
5	Nevada	2,387	-4.3%
6	Mississippi	2,337	+7.5%
7	Oklahoma	2,284	+16.9%
8	Alabama	2,042	+8.1%
9	South Carolina	1,991	+6.6%
10	Arkansas	1,937	+8.6%
11	Georgia	1,815	+9.5%
12	Kansas	1,671	+5.1%
13	North Carolina	1,531	+2.8%
14	Tennessee	1,519	+8.6%
15	Missouri	1,399	+1.5%
16	Kentucky	1,304	+3.6%
17	Delaware	1,265	+0.9%
18	Maryland	1,212	-7%
19	California	1,205	+5.1%
20	Virginia	1,188	-5.2%
21	Nebraska	1,185	+1%
22	New Mexico	1,174	+9.4%
23	New Jersey	1,050	+2.8%
24	Indiana	986	-4.1%
25	Illinois	929	-12.6%
26	Iowa	902	-7.7%
27	Ohio	863	-7%
28	South Dakota	840	-7.7%
29	West Virginia	815	-7.4%
30	Pennsylvania	809	-4.1%
31	Connecticut	774	+9.6%
32	New York	758	+1.6%
33	Rhode Island	731	+3.2%
34	Idaho	718	-1.4%
35	Massachusetts	708	+6.1%
36	Utah	700	-5.3%
37	Michigan	669	-12.2%
38	Wisconsin	536	-20%
39	North Dakota	531	-23.8%
40	Minnesota	496	-23.8%
41	Colorado	444	+3.7%
42	New Hampshire	421	+10.5%
43	Wyoming	393	-4.8%
44	Oregon	381	+2.4%
45	Maine	336	+10.2%
46	Montana	313	-8.2%
47	Washington	305	+9.7%
48	Vermont	294	-1.3%

Other periods

About this ranking

Sum over January to December of the degrees by which the daily mean temperature exceeds 65°F, a measure of cooling 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.

Every value in the ranking comes from the same publisher and the same period, so the states are compared on one definition. Equal values share a rank.

How to cite

NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December cooling 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/8/cdd/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 cooling degree days (base 65°F), contiguous US and statewide (US states by cooling degree days, 2022) [Data set]. Retrieved October 12, 2026, from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/8/cdd/12/12/1895-2025/data.json

MLA 9

NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide, US states by cooling degree days, 2022. NOAA National Centers for Environmental Information, 6 Oct. 2026, https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/8/cdd/12/12/1895-2025/data.json. Invokely, https://invokely.ai/rankings/cooling-degree-days/us-states?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

NOAA National Centers for Environmental Information. 2026. NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide. US states by cooling degree days, 2022. Dataset. Accessed October 12, 2026. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/8/cdd/12/12/1895-2025/data.json. Also distributed by Invokely, https://invokely.ai/rankings/cooling-degree-days/us-states?period=2022.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide, US states by cooling degree days, 2022 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/8/cdd/12/12/1895-2025/data.json, via Invokely: https://invokely.ai/rankings/cooling-degree-days/us-states?period=2022 (Accessed: 12 October 2026).

BibTeX

@misc{noaa_us_states_by_cooling_2022,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide: US states by cooling degree days, 2022}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/8/cdd/12/12/1895-2025/data.json},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/cooling-degree-days/us-states?period=2022. Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December cooling 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/8/cdd/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 cooling degree days (base 65°F), contiguous US and statewide: US states by cooling degree days, 2022
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/8/cdd/12/12/1895-2025/data.json
L2  - https://invokely.ai/rankings/cooling-degree-days/us-states?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/cooling-degree-days/us-states?period=2022.
N1  - Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December cooling 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/8/cdd/12/12/1895-2025/data.json. Retrieved 2026-10-12.
ER  -

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Rank US states by cooling degree days using official data, and cite the source.

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Questions

Which state has the highest cooling degree days?

Florida, with 3,903 degree days (base 65°F) in 2022, according to NOAA National Centers for Environmental Information.

Which state has the lowest cooling degree days?

Vermont, with 294 degree days (base 65°F) in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: NOAA National Centers for Environmental Information, NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide. Retrieved 2026-10-12.