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 2024, at 8,187 degree days (base 65°F). Florida had the lowest, at 552 degree days (base 65°F). The median was 4,717 degree days (base 65°F) and the figure for the United States was 3,721 degree days (base 65°F). Source: NOAA National Centers for Environmental Information.

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Highest8,187North Dakota
Lowest552Florida
Median4,71748 states
United States3,721History

Map of states, 2024

Alabama: 2,267 degree days (base 65°F)Arizona: 1,910 degree days (base 65°F)Arkansas: 2,785 degree days (base 65°F)California: 2,717 degree days (base 65°F)Colorado: 6,547 degree days (base 65°F)Connecticut: 5,202 degree days (base 65°F)Delaware: 4,037 degree days (base 65°F)Florida: 552 degree days (base 65°F)Georgia: 2,388 degree days (base 65°F)Idaho: 6,463 degree days (base 65°F)Illinois: 5,080 degree days (base 65°F)Indiana: 4,731 degree days (base 65°F)Iowa: 5,748 degree days (base 65°F)Kansas: 4,140 degree days (base 65°F)Kentucky: 3,667 degree days (base 65°F)Louisiana: 1,308 degree days (base 65°F)Maine: 6,846 degree days (base 65°F)Maryland: 3,963 degree days (base 65°F)Massachusetts: 5,458 degree days (base 65°F)Michigan: 5,560 degree days (base 65°F)Minnesota: 7,215 degree days (base 65°F)Mississippi: 1,952 degree days (base 65°F)Missouri: 4,165 degree days (base 65°F)Montana: 8,016 degree days (base 65°F)Nebraska: 5,450 degree days (base 65°F)Nevada: 3,286 degree days (base 65°F)New Hampshire: 6,582 degree days (base 65°F)New Jersey: 4,572 degree days (base 65°F)New Mexico: 4,096 degree days (base 65°F)New York: 5,255 degree days (base 65°F)North Carolina: 2,897 degree days (base 65°F)North Dakota: 8,187 degree days (base 65°F)Ohio: 4,703 degree days (base 65°F)Oklahoma: 2,908 degree days (base 65°F)Oregon: 5,041 degree days (base 65°F)Pennsylvania: 4,988 degree days (base 65°F)Rhode Island: 5,246 degree days (base 65°F)South Carolina: 2,222 degree days (base 65°F)South Dakota: 6,803 degree days (base 65°F)Tennessee: 3,189 degree days (base 65°F)Texas: 1,404 degree days (base 65°F)Utah: 6,549 degree days (base 65°F)Vermont: 7,035 degree days (base 65°F)Virginia: 3,678 degree days (base 65°F)Washington: 5,353 degree days (base 65°F)West Virginia: 4,306 degree days (base 65°F)Wisconsin: 6,293 degree days (base 65°F)Wyoming: 7,573 degree days (base 65°F)
  • Under 2,700
  • 2,700 to 3,900
  • 3,900 to 4,700
  • 4,700 to 5,400
  • 5,400 to 6,600
  • 6,600 and over
  • No data
degree days (base 65°F), 2024. 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, 2024

North Dakota: 8,187 degree days (base 65°F)North Dakota8,187Montana: 8,016 degree days (base 65°F)Montana8,016Wyoming: 7,573 degree days (base 65°F)Wyoming7,573Minnesota: 7,215 degree days (base 65°F)Minnesota7,215Vermont: 7,035 degree days (base 65°F)Vermont7,035Maine: 6,846 degree days (base 65°F)Maine6,846South Dakota: 6,803 degree days (base 65°F)South Dakota6,803New Hampshire: 6,582 degree days (base 65°F)New Hampshire6,582Utah: 6,549 degree days (base 65°F)Utah6,549Colorado: 6,547 degree days (base 65°F)Colorado6,547Idaho: 6,463 degree days (base 65°F)Idaho6,463Wisconsin: 6,293 degree days (base 65°F)Wisconsin6,293Iowa: 5,748 degree days (base 65°F)Iowa5,748Michigan: 5,560 degree days (base 65°F)Michigan5,560Massachusetts: 5,458 degree days (base 65°F)Massachusetts5,458Nebraska: 5,450 degree days (base 65°F)Nebraska5,450Washington: 5,353 degree days (base 65°F)Washington5,353New York: 5,255 degree days (base 65°F)New York5,255Rhode Island: 5,246 degree days (base 65°F)Rhode Island5,246Connecticut: 5,202 degree days (base 65°F)Connecticut5,202Illinois: 5,080 degree days (base 65°F)Illinois5,080Oregon: 5,041 degree days (base 65°F)Oregon5,041Pennsylvania: 4,988 degree days (base 65°F)Pennsylvania4,988Indiana: 4,731 degree days (base 65°F)Indiana4,731Ohio: 4,703 degree days (base 65°F)Ohio4,703New Jersey: 4,572 degree days (base 65°F)New Jersey4,572West Virginia: 4,306 degree days (base 65°F)West Virginia4,306Missouri: 4,165 degree days (base 65°F)Missouri4,165Kansas: 4,140 degree days (base 65°F)Kansas4,140New Mexico: 4,096 degree days (base 65°F)New Mexico4,096Delaware: 4,037 degree days (base 65°F)Delaware4,037Maryland: 3,963 degree days (base 65°F)Maryland3,963Virginia: 3,678 degree days (base 65°F)Virginia3,678Kentucky: 3,667 degree days (base 65°F)Kentucky3,667Nevada: 3,286 degree days (base 65°F)Nevada3,286Tennessee: 3,189 degree days (base 65°F)Tennessee3,189Oklahoma: 2,908 degree days (base 65°F)Oklahoma2,908North Carolina: 2,897 degree days (base 65°F)North Carolina2,897Arkansas: 2,785 degree days (base 65°F)Arkansas2,785California: 2,717 degree days (base 65°F)California2,717Georgia: 2,388 degree days (base 65°F)Georgia2,388Alabama: 2,267 degree days (base 65°F)Alabama2,267South Carolina: 2,222 degree days (base 65°F)South Carolina2,222Mississippi: 1,952 degree days (base 65°F)Mississippi1,952Arizona: 1,910 degree days (base 65°F)Arizona1,910Texas: 1,404 degree days (base 65°F)Texas1,404Louisiana: 1,308 degree days (base 65°F)Louisiana1,308Florida: 552 degree days (base 65°F)Florida552North Dakota: 8,187 degree days (base 65°F)North Dakota8,187Montana: 8,016 degree days (base 65°F)Montana8,016Wyoming: 7,573 degree days (base 65°F)Wyoming7,573Minnesota: 7,215 degree days (base 65°F)Minnesota7,215Vermont: 7,035 degree days (base 65°F)Vermont7,035Maine: 6,846 degree days (base 65°F)Maine6,846South Dakota: 6,803 degree days (base 65°F)South Dakota6,803New Hampshire: 6,582 degree days (base 65°F)New Hampshire6,582Utah: 6,549 degree days (base 65°F)Utah6,549Colorado: 6,547 degree days (base 65°F)Colorado6,547Idaho: 6,463 degree days (base 65°F)Idaho6,463Wisconsin: 6,293 degree days (base 65°F)Wisconsin6,293Iowa: 5,748 degree days (base 65°F)Iowa5,748Michigan: 5,560 degree days (base 65°F)Michigan5,560Massachusetts: 5,458 degree days (base 65°F)Massachusetts5,458Nebraska: 5,450 degree days (base 65°F)Nebraska5,450Washington: 5,353 degree days (base 65°F)Washington5,353New York: 5,255 degree days (base 65°F)New York5,255Rhode Island: 5,246 degree days (base 65°F)Rhode Island5,246Connecticut: 5,202 degree days (base 65°F)Connecticut5,202Illinois: 5,080 degree days (base 65°F)Illinois5,080Oregon: 5,041 degree days (base 65°F)Oregon5,041Pennsylvania: 4,988 degree days (base 65°F)Pennsylvania4,988Indiana: 4,731 degree days (base 65°F)Indiana4,731Ohio: 4,703 degree days (base 65°F)Ohio4,703New Jersey: 4,572 degree days (base 65°F)New Jersey4,572West Virginia: 4,306 degree days (base 65°F)West Virginia4,306Missouri: 4,165 degree days (base 65°F)Missouri4,165Kansas: 4,140 degree days (base 65°F)Kansas4,140New Mexico: 4,096 degree days (base 65°F)New Mexico4,096Delaware: 4,037 degree days (base 65°F)Delaware4,037Maryland: 3,963 degree days (base 65°F)Maryland3,963Virginia: 3,678 degree days (base 65°F)Virginia3,678Kentucky: 3,667 degree days (base 65°F)Kentucky3,667Nevada: 3,286 degree days (base 65°F)Nevada3,286Tennessee: 3,189 degree days (base 65°F)Tennessee3,189Oklahoma: 2,908 degree days (base 65°F)Oklahoma2,908North Carolina: 2,897 degree days (base 65°F)North Carolina2,897Arkansas: 2,785 degree days (base 65°F)Arkansas2,785California: 2,717 degree days (base 65°F)California2,717Georgia: 2,388 degree days (base 65°F)Georgia2,388Alabama: 2,267 degree days (base 65°F)Alabama2,267South Carolina: 2,222 degree days (base 65°F)South Carolina2,222Mississippi: 1,952 degree days (base 65°F)Mississippi1,952Arizona: 1,910 degree days (base 65°F)Arizona1,910Texas: 1,404 degree days (base 65°F)Texas1,404Louisiana: 1,308 degree days (base 65°F)Louisiana1,308Florida: 552 degree days (base 65°F)Florida552
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

RankStates2024
degree days (base 65°F)		Change on 2023
1North Dakota8,187-8.6%
2Montana8,016-2.3%
3Wyoming7,573-9.2%
4Minnesota7,215-7.6%
5Vermont7,035-1%
6Maine6,846-1.2%
7South Dakota6,803-7.7%
8New Hampshire6,582+0.7%
9Utah6,549-9.1%
10Colorado6,547-10.1%
11Idaho6,463-6.3%
12Wisconsin6,293-5.3%
13Iowa5,748-5.3%
14Michigan5,560-5.2%
15Massachusetts5,458+3.3%
16Nebraska5,450-6%
17Washington5,353+0.3%
18New York5,255+0.9%
19Rhode Island5,246+3.3%
20Connecticut5,202+2.9%
21Illinois5,080-4.5%
22Oregon5,041-2.8%
23Pennsylvania4,988+0.7%
24Indiana4,731-1.9%
25Ohio4,703-3.7%
26New Jersey4,572+3.5%
27West Virginia4,306-3.9%
28Missouri4,165-2.7%
29Kansas4,140-5.3%
30New Mexico4,096-7%
31Delaware4,037+5%
32Maryland3,963+3.6%
33Virginia3,678+1.3%
34Kentucky3,667-0.4%
35Nevada3,286-11.2%
36Tennessee3,189+1.2%
37Oklahoma2,908-7.7%
38North Carolina2,897+2.5%
39Arkansas2,785-2.9%
40California2,717-11.9%
41Georgia2,388+4.2%
42Alabama2,267+5.7%
43South Carolina2,222+3.6%
44Mississippi1,952+5.9%
45Arizona1,910-7.4%
46Texas1,404-5.3%
47Louisiana1,308+3.8%
48Florida552+28.7%

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, 2024) [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, 2024. 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=2024. 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, 2024. 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=2024.

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, 2024 [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=2024 (Accessed: 12 October 2026).

BibTeX
@misc{noaa_us_states_by_heating_2024,
  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, 2024}},
  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=2024. 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, 2024
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=2024
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/heating-degree-days/us-states?period=2024.
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 8,187 degree days (base 65°F) in 2024, according to NOAA National Centers for Environmental Information.

Which state has the lowest heating degree days?

Florida, with 552 degree days (base 65°F) in 2024.

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