Data / Rankings / Heating degree days / US states

US states by heating degree days

North Dakota had the highest heating degree days of 48 states in 2019, at 10,201 degree days (base 65°F). Florida had the lowest, at 497 degree days (base 65°F). The median was 5,499 degree days (base 65°F) and the figure for the United States was 4,327 degree days (base 65°F). Source: NOAA National Centers for Environmental Information.

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Highest10,201North Dakota
Lowest497Florida
Median5,49948 states
United States4,327History

Map of states, 2019

Alabama: 2,398 degree days (base 65°F)Arizona: 2,087 degree days (base 65°F)Arkansas: 3,454 degree days (base 65°F)California: 2,950 degree days (base 65°F)Colorado: 7,498 degree days (base 65°F)Connecticut: 5,937 degree days (base 65°F)Delaware: 4,347 degree days (base 65°F)Florida: 497 degree days (base 65°F)Georgia: 2,457 degree days (base 65°F)Idaho: 7,132 degree days (base 65°F)Illinois: 6,430 degree days (base 65°F)Indiana: 5,725 degree days (base 65°F)Iowa: 7,348 degree days (base 65°F)Kansas: 5,277 degree days (base 65°F)Kentucky: 4,190 degree days (base 65°F)Louisiana: 1,584 degree days (base 65°F)Maine: 8,097 degree days (base 65°F)Maryland: 4,409 degree days (base 65°F)Massachusetts: 6,245 degree days (base 65°F)Michigan: 6,963 degree days (base 65°F)Minnesota: 9,326 degree days (base 65°F)Mississippi: 2,276 degree days (base 65°F)Missouri: 5,182 degree days (base 65°F)Montana: 9,290 degree days (base 65°F)Nebraska: 6,863 degree days (base 65°F)Nevada: 3,770 degree days (base 65°F)New Hampshire: 7,725 degree days (base 65°F)New Jersey: 5,090 degree days (base 65°F)New Mexico: 4,575 degree days (base 65°F)New York: 6,125 degree days (base 65°F)North Carolina: 3,064 degree days (base 65°F)North Dakota: 10,201 degree days (base 65°F)Ohio: 5,571 degree days (base 65°F)Oklahoma: 3,742 degree days (base 65°F)Oregon: 5,426 degree days (base 65°F)Pennsylvania: 5,590 degree days (base 65°F)Rhode Island: 5,841 degree days (base 65°F)South Carolina: 2,336 degree days (base 65°F)South Dakota: 8,627 degree days (base 65°F)Tennessee: 3,483 degree days (base 65°F)Texas: 1,879 degree days (base 65°F)Utah: 7,436 degree days (base 65°F)Vermont: 8,471 degree days (base 65°F)Virginia: 3,992 degree days (base 65°F)Washington: 5,750 degree days (base 65°F)West Virginia: 4,734 degree days (base 65°F)Wisconsin: 8,025 degree days (base 65°F)Wyoming: 8,906 degree days (base 65°F)
  • Under 2,900
  • 2,900 to 4,300
  • 4,300 to 5,500
  • 5,500 to 6,300
  • 6,300 to 7,800
  • 7,800 and over
  • No data
degree days (base 65°F), 2019. Hatched areas have no value for this period. Source: NOAA NCEI, NOAA Climate at a Glance, January to December heating degree days (base 65°F), contiguous US and statewide. Boundaries: U.S. Census Bureau cartographic boundary files.

All states, 2019

North Dakota: 10,201 degree days (base 65°F)North Dakota10,201Minnesota: 9,326 degree days (base 65°F)Minnesota9,326Montana: 9,290 degree days (base 65°F)Montana9,290Wyoming: 8,906 degree days (base 65°F)Wyoming8,906South Dakota: 8,627 degree days (base 65°F)South Dakota8,627Vermont: 8,471 degree days (base 65°F)Vermont8,471Maine: 8,097 degree days (base 65°F)Maine8,097Wisconsin: 8,025 degree days (base 65°F)Wisconsin8,025New Hampshire: 7,725 degree days (base 65°F)New Hampshire7,725Colorado: 7,498 degree days (base 65°F)Colorado7,498Utah: 7,436 degree days (base 65°F)Utah7,436Iowa: 7,348 degree days (base 65°F)Iowa7,348Idaho: 7,132 degree days (base 65°F)Idaho7,132Michigan: 6,963 degree days (base 65°F)Michigan6,963Nebraska: 6,863 degree days (base 65°F)Nebraska6,863Illinois: 6,430 degree days (base 65°F)Illinois6,430Massachusetts: 6,245 degree days (base 65°F)Massachusetts6,245New York: 6,125 degree days (base 65°F)New York6,125Connecticut: 5,937 degree days (base 65°F)Connecticut5,937Rhode Island: 5,841 degree days (base 65°F)Rhode Island5,841Washington: 5,750 degree days (base 65°F)Washington5,750Indiana: 5,725 degree days (base 65°F)Indiana5,725Pennsylvania: 5,590 degree days (base 65°F)Pennsylvania5,590Ohio: 5,571 degree days (base 65°F)Ohio5,571Oregon: 5,426 degree days (base 65°F)Oregon5,426Kansas: 5,277 degree days (base 65°F)Kansas5,277Missouri: 5,182 degree days (base 65°F)Missouri5,182New Jersey: 5,090 degree days (base 65°F)New Jersey5,090West Virginia: 4,734 degree days (base 65°F)West Virginia4,734New Mexico: 4,575 degree days (base 65°F)New Mexico4,575Maryland: 4,409 degree days (base 65°F)Maryland4,409Delaware: 4,347 degree days (base 65°F)Delaware4,347Kentucky: 4,190 degree days (base 65°F)Kentucky4,190Virginia: 3,992 degree days (base 65°F)Virginia3,992Nevada: 3,770 degree days (base 65°F)Nevada3,770Oklahoma: 3,742 degree days (base 65°F)Oklahoma3,742Tennessee: 3,483 degree days (base 65°F)Tennessee3,483Arkansas: 3,454 degree days (base 65°F)Arkansas3,454North Carolina: 3,064 degree days (base 65°F)North Carolina3,064California: 2,950 degree days (base 65°F)California2,950Georgia: 2,457 degree days (base 65°F)Georgia2,457Alabama: 2,398 degree days (base 65°F)Alabama2,398South Carolina: 2,336 degree days (base 65°F)South Carolina2,336Mississippi: 2,276 degree days (base 65°F)Mississippi2,276Arizona: 2,087 degree days (base 65°F)Arizona2,087Texas: 1,879 degree days (base 65°F)Texas1,879Louisiana: 1,584 degree days (base 65°F)Louisiana1,584Florida: 497 degree days (base 65°F)Florida497North Dakota: 10,201 degree days (base 65°F)North Dakota10,201Minnesota: 9,326 degree days (base 65°F)Minnesota9,326Montana: 9,290 degree days (base 65°F)Montana9,290Wyoming: 8,906 degree days (base 65°F)Wyoming8,906South Dakota: 8,627 degree days (base 65°F)South Dakota8,627Vermont: 8,471 degree days (base 65°F)Vermont8,471Maine: 8,097 degree days (base 65°F)Maine8,097Wisconsin: 8,025 degree days (base 65°F)Wisconsin8,025New Hampshire: 7,725 degree days (base 65°F)New Hampshire7,725Colorado: 7,498 degree days (base 65°F)Colorado7,498Utah: 7,436 degree days (base 65°F)Utah7,436Iowa: 7,348 degree days (base 65°F)Iowa7,348Idaho: 7,132 degree days (base 65°F)Idaho7,132Michigan: 6,963 degree days (base 65°F)Michigan6,963Nebraska: 6,863 degree days (base 65°F)Nebraska6,863Illinois: 6,430 degree days (base 65°F)Illinois6,430Massachusetts: 6,245 degree days (base 65°F)Massachusetts6,245New York: 6,125 degree days (base 65°F)New York6,125Connecticut: 5,937 degree days (base 65°F)Connecticut5,937Rhode Island: 5,841 degree days (base 65°F)Rhode Island5,841Washington: 5,750 degree days (base 65°F)Washington5,750Indiana: 5,725 degree days (base 65°F)Indiana5,725Pennsylvania: 5,590 degree days (base 65°F)Pennsylvania5,590Ohio: 5,571 degree days (base 65°F)Ohio5,571Oregon: 5,426 degree days (base 65°F)Oregon5,426Kansas: 5,277 degree days (base 65°F)Kansas5,277Missouri: 5,182 degree days (base 65°F)Missouri5,182New Jersey: 5,090 degree days (base 65°F)New Jersey5,090West Virginia: 4,734 degree days (base 65°F)West Virginia4,734New Mexico: 4,575 degree days (base 65°F)New Mexico4,575Maryland: 4,409 degree days (base 65°F)Maryland4,409Delaware: 4,347 degree days (base 65°F)Delaware4,347Kentucky: 4,190 degree days (base 65°F)Kentucky4,190Virginia: 3,992 degree days (base 65°F)Virginia3,992Nevada: 3,770 degree days (base 65°F)Nevada3,770Oklahoma: 3,742 degree days (base 65°F)Oklahoma3,742Tennessee: 3,483 degree days (base 65°F)Tennessee3,483Arkansas: 3,454 degree days (base 65°F)Arkansas3,454North Carolina: 3,064 degree days (base 65°F)North Carolina3,064California: 2,950 degree days (base 65°F)California2,950Georgia: 2,457 degree days (base 65°F)Georgia2,457Alabama: 2,398 degree days (base 65°F)Alabama2,398South Carolina: 2,336 degree days (base 65°F)South Carolina2,336Mississippi: 2,276 degree days (base 65°F)Mississippi2,276Arizona: 2,087 degree days (base 65°F)Arizona2,087Texas: 1,879 degree days (base 65°F)Texas1,879Louisiana: 1,584 degree days (base 65°F)Louisiana1,584Florida: 497 degree days (base 65°F)Florida497
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.

Full ranking

RankStates2019
degree days (base 65°F)		Change on 2018
1North Dakota10,201+5.6%
2Minnesota9,326+3.5%
3Montana9,290+6.3%
4Wyoming8,906+8.9%
5South Dakota8,627+5.2%
6Vermont8,471+4.5%
7Maine8,097+3.3%
8Wisconsin8,025+2.9%
9New Hampshire7,725+4%
10Colorado7,498+9.1%
11Utah7,436+10.6%
12Iowa7,348+1.2%
13Idaho7,132+7.3%
14Michigan6,963+1.6%
15Nebraska6,863+0.7%
16Illinois6,4300%
17Massachusetts6,245+3%
18New York6,125+1.4%
19Connecticut5,937+3.5%
20Rhode Island5,841+3.6%
21Washington5,750+6.8%
22Indiana5,725-1.3%
23Pennsylvania5,590-3%
24Ohio5,571-3.4%
25Oregon5,426+7.3%
26Kansas5,277+0.7%
27Missouri5,182-2.6%
28New Jersey5,090-2%
29West Virginia4,734-7.3%
30New Mexico4,575+7.3%
31Maryland4,409-5.1%
32Delaware4,347-2.8%
33Kentucky4,190-6.2%
34Virginia3,992-7.6%
35Nevada3,770+14.6%
36Oklahoma3,742-2.2%
37Tennessee3,483-9.4%
38Arkansas3,454-4.7%
39North Carolina3,064-10%
40California2,950+15.9%
41Georgia2,457-12.2%
42Alabama2,398-11%
43South Carolina2,336-10.6%
44Mississippi2,276-7.8%
45Arizona2,087+20.4%
46Texas1,879-5.3%
47Louisiana1,584-5.8%
48Florida497-16.2%

Other periods

About this ranking

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.

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 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/32/hdd/12/12/1895-2025/data.json. Retrieved 2026-10-12.

Citation styles

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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 (US states by heating degree days, 2019) [Data set]. Retrieved October 12, 2026, from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/32/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, US states by heating degree days, 2019. NOAA National Centers for Environmental Information, 6 Oct. 2026, https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/32/hdd/12/12/1895-2025/data.json. Invokely, https://invokely.ai/rankings/heating-degree-days/us-states?period=2019. 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. US states by heating degree days, 2019. Dataset. Accessed October 12, 2026. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/32/hdd/12/12/1895-2025/data.json. Also distributed by Invokely, https://invokely.ai/rankings/heating-degree-days/us-states?period=2019.

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, US states by heating degree days, 2019 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/32/hdd/12/12/1895-2025/data.json, via Invokely: https://invokely.ai/rankings/heating-degree-days/us-states?period=2019 (Accessed: 12 October 2026).

BibTeX
@misc{noaa_us_states_by_heating_2019,
  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: US states by heating degree days, 2019}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/32/hdd/12/12/1895-2025/data.json},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/heating-degree-days/us-states?period=2019. 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/32/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: US states by heating degree days, 2019
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/32/hdd/12/12/1895-2025/data.json
L2  - https://invokely.ai/rankings/heating-degree-days/us-states?period=2019
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/heating-degree-days/us-states?period=2019.
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/32/hdd/12/12/1895-2025/data.json. Retrieved 2026-10-12.
ER  -
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Rank US states by heating degree days using official data, and cite the source.
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Questions

Which state has the highest heating degree days?

North Dakota, with 10,201 degree days (base 65°F) in 2019, according to NOAA National Centers for Environmental Information.

Which state has the lowest heating degree days?

Florida, with 497 degree days (base 65°F) in 2019.

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 heating degree days (base 65°F), contiguous US and statewide. Retrieved 2026-10-12.

US states: more rankings