Data / Heating degree days / New Hampshire

Heating degree days in New Hampshire

Heating degree days in New Hampshire was 7,368 degree days (base 65°F) in 2025, according to NOAA National Centers for Environmental Information. That is up 11.9% from 2024. That is the 7th highest of 48 states in 2025.

2025, degree days (base 65°F)7,368
Change on 2024+11.9%
Rank7th of 48US states ranked
Series high9,2491917
Series low6,5352023

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 New Hampshire, 1895 to 2025

6,0007,0008,0009,00010K189519141933195219711990200920251895: 8,330 degree days (base 65°F)1896: 8,296 degree days (base 65°F)1897: 8,167 degree days (base 65°F)1898: 7,935 degree days (base 65°F)1899: 8,283 degree days (base 65°F)1900: 8,145 degree days (base 65°F)1901: 8,356 degree days (base 65°F)1902: 8,111 degree days (base 65°F)1903: 8,192 degree days (base 65°F)1904: 9,244 degree days (base 65°F)1905: 8,652 degree days (base 65°F)1906: 8,259 degree days (base 65°F)1907: 8,826 degree days (base 65°F)1908: 7,989 degree days (base 65°F)1909: 8,181 degree days (base 65°F)1910: 8,031 degree days (base 65°F)1911: 8,096 degree days (base 65°F)1912: 8,431 degree days (base 65°F)1913: 7,470 degree days (base 65°F)1914: 8,562 degree days (base 65°F)1915: 7,772 degree days (base 65°F)1916: 8,496 degree days (base 65°F)1917: 9,249 degree days (base 65°F)1918: 8,489 degree days (base 65°F)1919: 7,888 degree days (base 65°F)1920: 8,382 degree days (base 65°F)1921: 7,599 degree days (base 65°F)1922: 8,146 degree days (base 65°F)1923: 8,415 degree days (base 65°F)1924: 8,559 degree days (base 65°F)1925: 8,212 degree days (base 65°F)1926: 9,002 degree days (base 65°F)1927: 7,810 degree days (base 65°F)1928: 8,020 degree days (base 65°F)1929: 8,037 degree days (base 65°F)1930: 7,773 degree days (base 65°F)1931: 7,440 degree days (base 65°F)1932: 7,670 degree days (base 65°F)1933: 8,000 degree days (base 65°F)1934: 8,343 degree days (base 65°F)1935: 8,327 degree days (base 65°F)1936: 8,096 degree days (base 65°F)1937: 7,767 degree days (base 65°F)1938: 7,670 degree days (base 65°F)1939: 8,316 degree days (base 65°F)1940: 8,626 degree days (base 65°F)1941: 7,776 degree days (base 65°F)1942: 7,779 degree days (base 65°F)1943: 8,549 degree days (base 65°F)1944: 8,155 degree days (base 65°F)1945: 7,946 degree days (base 65°F)1946: 7,680 degree days (base 65°F)1947: 7,939 degree days (base 65°F)1948: 8,068 degree days (base 65°F)1949: 7,152 degree days (base 65°F)1950: 7,829 degree days (base 65°F)1951: 7,662 degree days (base 65°F)1952: 7,596 degree days (base 65°F)1953: 6,972 degree days (base 65°F)1954: 7,746 degree days (base 65°F)1955: 7,903 degree days (base 65°F)1956: 8,203 degree days (base 65°F)1957: 7,553 degree days (base 65°F)1958: 8,311 degree days (base 65°F)1959: 7,733 degree days (base 65°F)1960: 7,902 degree days (base 65°F)1961: 7,873 degree days (base 65°F)1962: 8,355 degree days (base 65°F)1963: 8,138 degree days (base 65°F)1964: 8,017 degree days (base 65°F)1965: 8,147 degree days (base 65°F)1966: 8,002 degree days (base 65°F)1967: 8,309 degree days (base 65°F)1968: 8,172 degree days (base 65°F)1969: 7,865 degree days (base 65°F)1970: 8,050 degree days (base 65°F)1971: 8,038 degree days (base 65°F)1972: 8,385 degree days (base 65°F)1973: 7,382 degree days (base 65°F)1974: 7,969 degree days (base 65°F)1975: 7,709 degree days (base 65°F)1976: 8,230 degree days (base 65°F)1977: 7,828 degree days (base 65°F)1978: 8,376 degree days (base 65°F)1979: 7,599 degree days (base 65°F)1980: 8,236 degree days (base 65°F)1981: 7,731 degree days (base 65°F)1982: 8,056 degree days (base 65°F)1983: 7,494 degree days (base 65°F)1984: 7,650 degree days (base 65°F)1985: 7,922 degree days (base 65°F)1986: 7,799 degree days (base 65°F)1987: 7,746 degree days (base 65°F)1988: 7,967 degree days (base 65°F)1989: 8,185 degree days (base 65°F)1990: 7,108 degree days (base 65°F)1991: 7,211 degree days (base 65°F)1992: 8,093 degree days (base 65°F)1993: 7,937 degree days (base 65°F)1994: 7,934 degree days (base 65°F)1995: 7,749 degree days (base 65°F)1996: 7,800 degree days (base 65°F)1997: 7,958 degree days (base 65°F)1998: 6,748 degree days (base 65°F)1999: 7,060 degree days (base 65°F)2000: 7,688 degree days (base 65°F)2001: 7,273 degree days (base 65°F)2002: 7,285 degree days (base 65°F)2003: 8,041 degree days (base 65°F)2004: 7,716 degree days (base 65°F)2005: 7,597 degree days (base 65°F)2006: 6,864 degree days (base 65°F)2007: 7,671 degree days (base 65°F)2008: 7,534 degree days (base 65°F)2009: 7,761 degree days (base 65°F)2010: 6,831 degree days (base 65°F)2011: 7,185 degree days (base 65°F)2012: 6,587 degree days (base 65°F)2013: 7,470 degree days (base 65°F)2014: 7,795 degree days (base 65°F)2015: 7,599 degree days (base 65°F)2016: 6,921 degree days (base 65°F)2017: 7,100 degree days (base 65°F)2018: 7,426 degree days (base 65°F)2019: 7,725 degree days (base 65°F)2020: 6,906 degree days (base 65°F)2021: 6,788 degree days (base 65°F)2022: 7,065 degree days (base 65°F)2023: 6,535 degree days (base 65°F)2024: 6,582 degree days (base 65°F)2025: 7,368 degree days (base 65°F)6,0007,0008,0009,00010K18951939198320252025: 7,368 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)
20257,368
20246,582
20236,535
20227,065
20216,788
20206,906
20197,725
20187,426
20177,100
20166,921
20157,599
20147,795
20137,470
20126,587
20117,185
20106,831
20097,761
20087,534
20077,671
20066,864
20057,597
20047,716
20038,041
20027,285
20017,273
20007,688
19997,060
19986,748
19977,958
19967,800
19957,749
19947,934
19937,937
19928,093
19917,211
19907,108
19898,185
19887,967
19877,746
19867,799
19857,922
19847,650
19837,494
19828,056
19817,731
19808,236
19797,599
19788,376
19777,828
19768,230
19757,709
19747,969
19737,382
19728,385
19718,038
19708,050
19697,865
19688,172
19678,309
19668,002
19658,147
19648,017
19638,138
19628,355
19617,873
19607,902
19597,733
19588,311
19577,553
19568,203
19557,903
19547,746
19536,972
19527,596
19517,662
19507,829
19497,152
19488,068
19477,939
19467,680
19457,946
19448,155
19438,549
19427,779
19417,776
19408,626
19398,316
19387,670
19377,767
19368,096
19358,327
19348,343
19338,000
19327,670
19317,440
19307,773
19298,037
19288,020
19277,810
19269,002
19258,212
19248,559
19238,415
19228,146
19217,599
19208,382
19197,888
19188,489
19179,249
19168,496
19157,772
19148,562
19137,470
19128,431
19118,096
19108,031
19098,181
19087,989
19078,826
19068,259
19058,652
19049,244
19038,192
19028,111
19018,356
19008,145
18998,283
18987,935
18978,167
18968,296
18958,330

Compared with United States

Place2025
New Hampshire7,368
United States4,062

New Hampshire compared with nearby places

Alabama: 2,505 degree days (base 65°F)Arizona: 1,563 degree days (base 65°F)Arkansas: 3,048 degree days (base 65°F)California: 2,518 degree days (base 65°F)Colorado: 6,554 degree days (base 65°F)Connecticut: 5,765 degree days (base 65°F)Delaware: 4,547 degree days (base 65°F)Florida: 614 degree days (base 65°F)Georgia: 2,627 degree days (base 65°F)Idaho: 6,232 degree days (base 65°F)Illinois: 5,896 degree days (base 65°F)Indiana: 5,589 degree days (base 65°F)Iowa: 6,444 degree days (base 65°F)Kansas: 4,617 degree days (base 65°F)Kentucky: 4,267 degree days (base 65°F)Louisiana: 1,442 degree days (base 65°F)Maine: 7,662 degree days (base 65°F)Maryland: 4,519 degree days (base 65°F)Massachusetts: 6,056 degree days (base 65°F)Michigan: 6,634 degree days (base 65°F)Minnesota: 8,152 degree days (base 65°F)Mississippi: 2,104 degree days (base 65°F)Missouri: 4,680 degree days (base 65°F)Montana: 8,014 degree days (base 65°F)Nebraska: 5,808 degree days (base 65°F)Nevada: 2,916 degree days (base 65°F)New Hampshire: 7,368 degree days (base 65°F)New Jersey: 5,159 degree days (base 65°F)New Mexico: 3,957 degree days (base 65°F)New York: 5,920 degree days (base 65°F)North Carolina: 3,270 degree days (base 65°F)North Dakota: 8,828 degree days (base 65°F)Ohio: 5,760 degree days (base 65°F)Oklahoma: 3,171 degree days (base 65°F)Oregon: 4,854 degree days (base 65°F)Pennsylvania: 5,721 degree days (base 65°F)Rhode Island: 5,665 degree days (base 65°F)South Carolina: 2,512 degree days (base 65°F)South Dakota: 7,159 degree days (base 65°F)Tennessee: 3,545 degree days (base 65°F)Texas: 1,517 degree days (base 65°F)Utah: 6,172 degree days (base 65°F)Vermont: 7,911 degree days (base 65°F)Virginia: 4,154 degree days (base 65°F)Washington: 5,181 degree days (base 65°F)West Virginia: 5,064 degree days (base 65°F)Wisconsin: 7,344 degree days (base 65°F)Wyoming: 7,590 degree days (base 65°F)
  • Under 2,600
  • 2,600 to 4,200
  • 4,200 to 5,200
  • 5,200 to 5,900
  • 5,900 to 7,200
  • 7,200 and over
  • No data
Heating degree days, 2025, degree days (base 65°F). New Hampshire is outlined. Same source and period for every area shown. Source: NOAA National Centers for Environmental Information. Boundaries: U.S. Census Bureau cartographic boundary files.

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.

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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/27/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 (Heating degree days, New Hampshire, 1895 to 2025) [Data set]. Retrieved October 12, 2026, from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/27/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, New Hampshire, 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/27/hdd/12/12/1895-2025/data.json. Invokely, https://invokely.ai/en/heating-degree-days/new-hampshire. 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, New Hampshire, 1895 to 2025. Dataset. Accessed October 12, 2026. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/27/hdd/12/12/1895-2025/data.json. Also distributed by Invokely, https://invokely.ai/en/heating-degree-days/new-hampshire.

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, New Hampshire, 1895 to 2025 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/27/hdd/12/12/1895-2025/data.json, via Invokely: https://invokely.ai/en/heating-degree-days/new-hampshire (Accessed: 12 October 2026).

BibTeX
@misc{noaa_heating_degree_days_new_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, New Hampshire, 1895 to 2025}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/27/hdd/12/12/1895-2025/data.json},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/en/heating-degree-days/new-hampshire. 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/27/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, New Hampshire, 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/27/hdd/12/12/1895-2025/data.json
L2  - https://invokely.ai/en/heating-degree-days/new-hampshire
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/heating-degree-days/new-hampshire.
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/27/hdd/12/12/1895-2025/data.json. Retrieved 2026-10-12.
ER  -
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Questions

What is the heating degree days in New Hampshire?

Heating degree days in New Hampshire was 7,368 degree days (base 65°F) in 2025, according to NOAA National Centers for Environmental Information. That is up 11.9% from 2024. That is the 7th 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 New Hampshire?

9,249 degree days (base 65°F) in 1917, the highest value since 1895 in this series.

Heating degree days elsewhere in United States

Related statistics for New Hampshire

All statistics for New Hampshire | New Hampshire in figures