Data / Cooling degree days / Arizona

Cooling degree days in Arizona

Cooling degree days in Arizona was 3,330 degree days (base 65°F) in 2025, according to NOAA National Centers for Environmental Information. That is down 4.7% from 2024. That is the 2nd highest of 48 states in 2025.

2025, degree days (base 65°F)3,330
Change on 2024-4.7%
Rank2nd of 48US states ranked
Series high3,5572020
Series low2,2081912

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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Cooling degree days in Arizona, 1895 to 2025

2,0002,5003,0003,5004,000189519141933195219711990200920251895: 2,502 degree days (base 65°F)1896: 2,616 degree days (base 65°F)1897: 2,554 degree days (base 65°F)1898: 2,680 degree days (base 65°F)1899: 2,408 degree days (base 65°F)1900: 2,435 degree days (base 65°F)1901: 2,488 degree days (base 65°F)1902: 2,519 degree days (base 65°F)1903: 2,506 degree days (base 65°F)1904: 2,518 degree days (base 65°F)1905: 2,543 degree days (base 65°F)1906: 2,470 degree days (base 65°F)1907: 2,412 degree days (base 65°F)1908: 2,401 degree days (base 65°F)1909: 2,474 degree days (base 65°F)1910: 2,985 degree days (base 65°F)1911: 2,511 degree days (base 65°F)1912: 2,208 degree days (base 65°F)1913: 2,350 degree days (base 65°F)1914: 2,748 degree days (base 65°F)1915: 2,386 degree days (base 65°F)1916: 2,404 degree days (base 65°F)1917: 2,537 degree days (base 65°F)1918: 2,567 degree days (base 65°F)1919: 2,470 degree days (base 65°F)1920: 2,304 degree days (base 65°F)1921: 2,505 degree days (base 65°F)1922: 2,717 degree days (base 65°F)1923: 2,275 degree days (base 65°F)1924: 2,720 degree days (base 65°F)1925: 2,547 degree days (base 65°F)1926: 2,708 degree days (base 65°F)1927: 2,578 degree days (base 65°F)1928: 2,750 degree days (base 65°F)1929: 2,621 degree days (base 65°F)1930: 2,447 degree days (base 65°F)1931: 2,805 degree days (base 65°F)1932: 2,639 degree days (base 65°F)1933: 2,788 degree days (base 65°F)1934: 2,975 degree days (base 65°F)1935: 2,530 degree days (base 65°F)1936: 2,899 degree days (base 65°F)1937: 2,851 degree days (base 65°F)1938: 2,646 degree days (base 65°F)1939: 2,736 degree days (base 65°F)1940: 3,001 degree days (base 65°F)1941: 2,213 degree days (base 65°F)1942: 2,609 degree days (base 65°F)1943: 2,779 degree days (base 65°F)1944: 2,468 degree days (base 65°F)1945: 2,578 degree days (base 65°F)1946: 2,690 degree days (base 65°F)1947: 2,786 degree days (base 65°F)1948: 2,753 degree days (base 65°F)1949: 2,653 degree days (base 65°F)1950: 2,677 degree days (base 65°F)1951: 2,609 degree days (base 65°F)1952: 2,865 degree days (base 65°F)1953: 2,607 degree days (base 65°F)1954: 2,871 degree days (base 65°F)1955: 2,491 degree days (base 65°F)1956: 2,790 degree days (base 65°F)1957: 2,645 degree days (base 65°F)1958: 2,990 degree days (base 65°F)1959: 2,839 degree days (base 65°F)1960: 2,929 degree days (base 65°F)1961: 2,673 degree days (base 65°F)1962: 2,791 degree days (base 65°F)1963: 2,780 degree days (base 65°F)1964: 2,546 degree days (base 65°F)1965: 2,398 degree days (base 65°F)1966: 2,846 degree days (base 65°F)1967: 2,619 degree days (base 65°F)1968: 2,502 degree days (base 65°F)1969: 2,821 degree days (base 65°F)1970: 2,683 degree days (base 65°F)1971: 2,461 degree days (base 65°F)1972: 2,764 degree days (base 65°F)1973: 2,701 degree days (base 65°F)1974: 2,817 degree days (base 65°F)1975: 2,477 degree days (base 65°F)1976: 2,534 degree days (base 65°F)1977: 2,855 degree days (base 65°F)1978: 2,840 degree days (base 65°F)1979: 2,733 degree days (base 65°F)1980: 2,740 degree days (base 65°F)1981: 2,987 degree days (base 65°F)1982: 2,536 degree days (base 65°F)1983: 2,633 degree days (base 65°F)1984: 2,710 degree days (base 65°F)1985: 2,770 degree days (base 65°F)1986: 2,724 degree days (base 65°F)1987: 2,837 degree days (base 65°F)1988: 2,904 degree days (base 65°F)1989: 3,091 degree days (base 65°F)1990: 2,810 degree days (base 65°F)1991: 2,616 degree days (base 65°F)1992: 2,818 degree days (base 65°F)1993: 2,739 degree days (base 65°F)1994: 3,035 degree days (base 65°F)1995: 2,894 degree days (base 65°F)1996: 3,106 degree days (base 65°F)1997: 3,068 degree days (base 65°F)1998: 2,677 degree days (base 65°F)1999: 2,850 degree days (base 65°F)2000: 3,188 degree days (base 65°F)2001: 3,238 degree days (base 65°F)2002: 3,113 degree days (base 65°F)2003: 3,227 degree days (base 65°F)2004: 2,937 degree days (base 65°F)2005: 3,004 degree days (base 65°F)2006: 3,083 degree days (base 65°F)2007: 3,249 degree days (base 65°F)2008: 2,998 degree days (base 65°F)2009: 3,118 degree days (base 65°F)2010: 2,942 degree days (base 65°F)2011: 3,124 degree days (base 65°F)2012: 3,214 degree days (base 65°F)2013: 3,065 degree days (base 65°F)2014: 3,117 degree days (base 65°F)2015: 3,129 degree days (base 65°F)2016: 3,219 degree days (base 65°F)2017: 3,338 degree days (base 65°F)2018: 3,246 degree days (base 65°F)2019: 2,975 degree days (base 65°F)2020: 3,557 degree days (base 65°F)2021: 3,152 degree days (base 65°F)2022: 3,187 degree days (base 65°F)2023: 3,175 degree days (base 65°F)2024: 3,493 degree days (base 65°F)2025: 3,330 degree days (base 65°F)2,0002,5003,0003,5004,00018951939198320252025: 3,330 degree days (base 65°F)
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
Perioddegree days (base 65°F)
20253,330
20243,493
20233,175
20223,187
20213,152
20203,557
20192,975
20183,246
20173,338
20163,219
20153,129
20143,117
20133,065
20123,214
20113,124
20102,942
20093,118
20082,998
20073,249
20063,083
20053,004
20042,937
20033,227
20023,113
20013,238
20003,188
19992,850
19982,677
19973,068
19963,106
19952,894
19943,035
19932,739
19922,818
19912,616
19902,810
19893,091
19882,904
19872,837
19862,724
19852,770
19842,710
19832,633
19822,536
19812,987
19802,740
19792,733
19782,840
19772,855
19762,534
19752,477
19742,817
19732,701
19722,764
19712,461
19702,683
19692,821
19682,502
19672,619
19662,846
19652,398
19642,546
19632,780
19622,791
19612,673
19602,929
19592,839
19582,990
19572,645
19562,790
19552,491
19542,871
19532,607
19522,865
19512,609
19502,677
19492,653
19482,753
19472,786
19462,690
19452,578
19442,468
19432,779
19422,609
19412,213
19403,001
19392,736
19382,646
19372,851
19362,899
19352,530
19342,975
19332,788
19322,639
19312,805
19302,447
19292,621
19282,750
19272,578
19262,708
19252,547
19242,720
19232,275
19222,717
19212,505
19202,304
19192,470
19182,567
19172,537
19162,404
19152,386
19142,748
19132,350
19122,208
19112,511
19102,985
19092,474
19082,401
19072,412
19062,470
19052,543
19042,518
19032,506
19022,519
19012,488
19002,435
18992,408
18982,680
18972,554
18962,616
18952,502

Compared with United States

Place2025
Arizona3,330
United States1,502

Arizona compared with nearby places

Alabama: 2,092 degree days (base 65°F)Arizona: 3,330 degree days (base 65°F)Arkansas: 1,990 degree days (base 65°F)California: 948 degree days (base 65°F)Colorado: 348 degree days (base 65°F)Connecticut: 695 degree days (base 65°F)Delaware: 1,171 degree days (base 65°F)Florida: 3,882 degree days (base 65°F)Georgia: 1,831 degree days (base 65°F)Idaho: 627 degree days (base 65°F)Illinois: 1,038 degree days (base 65°F)Indiana: 1,041 degree days (base 65°F)Iowa: 953 degree days (base 65°F)Kansas: 1,488 degree days (base 65°F)Kentucky: 1,400 degree days (base 65°F)Louisiana: 3,033 degree days (base 65°F)Maine: 282 degree days (base 65°F)Maryland: 1,209 degree days (base 65°F)Massachusetts: 587 degree days (base 65°F)Michigan: 670 degree days (base 65°F)Minnesota: 522 degree days (base 65°F)Mississippi: 2,510 degree days (base 65°F)Missouri: 1,413 degree days (base 65°F)Montana: 237 degree days (base 65°F)Nebraska: 1,096 degree days (base 65°F)Nevada: 2,339 degree days (base 65°F)New Hampshire: 386 degree days (base 65°F)New Jersey: 926 degree days (base 65°F)New Mexico: 1,145 degree days (base 65°F)New York: 716 degree days (base 65°F)North Carolina: 1,533 degree days (base 65°F)North Dakota: 474 degree days (base 65°F)Ohio: 910 degree days (base 65°F)Oklahoma: 2,019 degree days (base 65°F)Oregon: 379 degree days (base 65°F)Pennsylvania: 788 degree days (base 65°F)Rhode Island: 633 degree days (base 65°F)South Carolina: 1,973 degree days (base 65°F)South Dakota: 767 degree days (base 65°F)Tennessee: 1,575 degree days (base 65°F)Texas: 3,219 degree days (base 65°F)Utah: 673 degree days (base 65°F)Vermont: 301 degree days (base 65°F)Virginia: 1,212 degree days (base 65°F)Washington: 298 degree days (base 65°F)West Virginia: 949 degree days (base 65°F)Wisconsin: 589 degree days (base 65°F)Wyoming: 332 degree days (base 65°F)
  • Under 460
  • 460 to 690
  • 690 to 950
  • 950 to 1,300
  • 1,300 to 2,000
  • 2,000 and over
  • No data
Cooling degree days, 2025, degree days (base 65°F). Arizona 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 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.

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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 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/2/cdd/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 cooling degree days (base 65°F), contiguous US and statewide (Cooling degree days, Arizona, 1895 to 2025) [Data set]. Retrieved October 12, 2026, from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/2/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, Arizona, 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/2/cdd/12/12/1895-2025/data.json. Invokely, https://invokely.ai/en/cooling-degree-days/arizona. 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, Arizona, 1895 to 2025. Dataset. Accessed October 12, 2026. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/2/cdd/12/12/1895-2025/data.json. Also distributed by Invokely, https://invokely.ai/en/cooling-degree-days/arizona.

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, Arizona, 1895 to 2025 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/2/cdd/12/12/1895-2025/data.json, via Invokely: https://invokely.ai/en/cooling-degree-days/arizona (Accessed: 12 October 2026).

BibTeX
@misc{noaa_cooling_degree_days_arizona_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, Arizona, 1895 to 2025}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/2/cdd/12/12/1895-2025/data.json},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/en/cooling-degree-days/arizona. 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/2/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, Arizona, 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/2/cdd/12/12/1895-2025/data.json
L2  - https://invokely.ai/en/cooling-degree-days/arizona
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/cooling-degree-days/arizona.
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/2/cdd/12/12/1895-2025/data.json. Retrieved 2026-10-12.
ER  -
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Questions

What is the cooling degree days in Arizona?

Cooling degree days in Arizona was 3,330 degree days (base 65°F) in 2025, according to NOAA National Centers for Environmental Information. That is down 4.7% from 2024. That is the 2nd 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 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 Arizona?

3,557 degree days (base 65°F) in 2020, the highest value since 1895 in this series.

Cooling degree days elsewhere in United States

Related statistics for Arizona

All statistics for Arizona | Arizona in figures