# Cooling degree days in Iowa

Cooling degree days in Iowa was 953 degree days (base 65°F) in 2025. Source: NOAA National Centers for Environmental Information.

- Indicator id: `cooling_degree_days_annual`
- Place id: `us-state-19`
- Unit: degree days (base 65°F)
- 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).
- Note: NOAA publishes these for operational monitoring; they can differ from official degree day publications.
- Source: NOAA National Centers for Environmental Information, NOAA Climate at a Glance, January to December cooling degree days (base 65°F), contiguous US and statewide (https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/13/cdd/12/12/1895-2025/data.json)
- Publisher page: https://invokely.ai/en/publishers/noaa-ncei
- Retrieved: 2026-10-12
- License: Public domain (US government work); NCEI asks users to cite the nClimDiv dataset
- Citation: 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/13/cdd/12/12/1895-2025/data.json. Retrieved 2026-10-12.
- Web page: https://invokely.ai/en/cooling-degree-days/iowa
- API: https://invokely.ai/api/v1/series?indicator=cooling_degree_days_annual&place=us-state-19

| Period | degree days (base 65°F) |
|---|---:|
| 2025 | 953 |
| 2024 | 895 |
| 2023 | 907 |
| 2022 | 902 |
| 2021 | 977 |
| 2020 | 879 |
| 2019 | 830 |
| 2018 | 1,005 |
| 2017 | 807 |
| 2016 | 942 |
| 2015 | 764 |
| 2014 | 656 |
| 2013 | 800 |
| 2012 | 1,070 |
| 2011 | 894 |
| 2010 | 950 |
| 2009 | 558 |
| 2008 | 710 |
| 2007 | 981 |
| 2006 | 849 |
| 2005 | 956 |
| 2004 | 606 |
| 2003 | 751 |
| 2002 | 912 |
| 2001 | 819 |
| 2000 | 808 |
| 1999 | 818 |
| 1998 | 936 |
| 1997 | 722 |
| 1996 | 617 |
| 1995 | 888 |
| 1994 | 690 |
| 1993 | 639 |
| 1992 | 476 |
| 1991 | 933 |
| 1990 | 777 |
| 1989 | 737 |
| 1988 | 1,157 |
| 1987 | 984 |
| 1986 | 816 |
| 1985 | 676 |
| 1984 | 764 |
| 1983 | 1,060 |
| 1982 | 682 |
| 1981 | 721 |
| 1980 | 945 |
| 1979 | 723 |
| 1978 | 811 |
| 1977 | 947 |
| 1976 | 737 |
| 1975 | 843 |
| 1974 | 679 |
| 1973 | 825 |
| 1972 | 697 |
| 1971 | 787 |
| 1970 | 817 |
| 1969 | 702 |
| 1968 | 733 |
| 1967 | 516 |
| 1966 | 697 |
| 1965 | 698 |
| 1964 | 822 |
| 1963 | 886 |
| 1962 | 721 |
| 1961 | 674 |
| 1960 | 710 |
| 1959 | 879 |
| 1958 | 631 |
| 1957 | 810 |
| 1956 | 879 |
| 1955 | 1,075 |
| 1954 | 911 |
| 1953 | 886 |
| 1952 | 824 |
| 1951 | 569 |
| 1950 | 531 |
| 1949 | 905 |
| 1948 | 849 |
| 1947 | 946 |
| 1946 | 656 |
| 1945 | 577 |
| 1944 | 825 |
| 1943 | 815 |
| 1942 | 738 |
| 1941 | 990 |
| 1940 | 861 |
| 1939 | 976 |
| 1938 | 973 |
| 1937 | 974 |
| 1936 | 1,346 |
| 1935 | 850 |
| 1934 | 1,255 |
| 1933 | 1,069 |
| 1932 | 862 |
| 1931 | 1,106 |
| 1930 | 950 |
| 1929 | 670 |
| 1928 | 679 |
| 1927 | 618 |
| 1926 | 782 |
| 1925 | 845 |
| 1924 | 522 |
| 1923 | 821 |
| 1922 | 878 |
| 1921 | 1,102 |
| 1920 | 715 |
| 1919 | 929 |
| 1918 | 888 |
| 1917 | 607 |
| 1916 | 888 |
| 1915 | 453 |
| 1914 | 985 |
| 1913 | 994 |
| 1912 | 720 |
| 1911 | 1,027 |
| 1910 | 794 |
| 1909 | 777 |
| 1908 | 709 |
| 1907 | 624 |
| 1906 | 789 |
| 1905 | 768 |
| 1904 | 571 |
| 1903 | 580 |
| 1902 | 605 |
| 1901 | 1,132 |
| 1900 | 983 |
| 1899 | 820 |
| 1898 | 805 |
| 1897 | 845 |
| 1896 | 778 |
| 1895 | 826 |