Cooling degree days in New Hampshire

Cooling degree days in New Hampshire was 386 degree days (base 65°F) in 2025, according to NOAA National Centers for Environmental Information. That is down 15.2% from 2024. That is the 41st highest of 48 states in 2025.

2025, degree days (base 65°F)386

Change on 2024-15.2%

Rank41st of 48US states ranked

Series high4552024

Series low741902

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

Cooling degree days in New Hampshire, 1895 to 2025

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, published 2026-10-06.

All 131 values

Period	degree days (base 65°F)
2025	386
2024	455
2023	341
2022	421
2021	381
2020	417
2019	330
2018	441
2017	251
2016	377
2015	332
2014	248
2013	349
2012	372
2011	345
2010	394
2009	192
2008	274
2007	244
2006	319
2005	403
2004	216
2003	317
2002	338
2001	300
2000	138
1999	370
1998	277
1997	200
1996	237
1995	319
1994	325
1993	263
1992	123
1991	264
1990	274
1989	224
1988	333
1987	196
1986	138
1985	186
1984	275
1983	305
1982	158
1981	214
1980	250
1979	241
1978	213
1977	186
1976	228
1975	288
1974	199
1973	353
1972	182
1971	228
1970	278
1969	224
1968	206
1967	274
1966	208
1965	160
1964	166
1963	216
1962	136
1961	250
1960	185
1959	317
1958	168
1957	179
1956	138
1955	397
1954	124
1953	229
1952	326
1951	176
1950	208
1949	387
1948	243
1947	315
1946	147
1945	196
1944	289
1943	224
1942	199
1941	199
1940	156
1939	259
1938	258
1937	310
1936	167
1935	246
1934	201
1933	207
1932	170
1931	264
1930	225
1929	153
1928	243
1927	113
1926	124
1925	169
1924	156
1923	112
1922	193
1921	264
1920	199
1919	226
1918	183
1917	236
1916	226
1915	124
1914	115
1913	171
1912	128
1911	265
1910	170
1909	117
1908	250
1907	137
1906	228
1905	149
1904	145
1903	90
1902	74
1901	302
1900	258
1899	195
1898	250
1897	196
1896	226
1895	189

Compared with United States

Place	2025
New Hampshire	386
United States	1,502

Rankings

US states by cooling degree days 48 places

Definition

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.

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/27/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 (Cooling 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/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, Cooling 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/cdd/12/12/1895-2025/data.json. Invokely, https://invokely.ai/en/cooling-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 cooling degree days (base 65°F), contiguous US and statewide. Cooling 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/cdd/12/12/1895-2025/data.json. Also distributed by Invokely, https://invokely.ai/en/cooling-degree-days/new-hampshire.

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, Cooling 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/cdd/12/12/1895-2025/data.json, via Invokely: https://invokely.ai/en/cooling-degree-days/new-hampshire (Accessed: 12 October 2026).

BibTeX

@misc{noaa_cooling_degree_days_new_2025,
  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: Cooling 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/cdd/12/12/1895-2025/data.json},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/en/cooling-degree-days/new-hampshire. 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/27/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: Cooling 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/cdd/12/12/1895-2025/data.json
L2  - https://invokely.ai/en/cooling-degree-days/new-hampshire
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/cooling-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 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/27/cdd/12/12/1895-2025/data.json. Retrieved 2026-10-12.
ER  -

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Questions

What is the cooling degree days in New Hampshire?

Where does this figure come from?

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 by Invokely on 2026-10-12.

What was the highest cooling degree days in New Hampshire?

455 degree days (base 65°F) in 2024, the highest value since 1895 in this series.

Cooling degree days elsewhere in United States

Related statistics for New Hampshire

All statistics for New Hampshire | New Hampshire in figures