# Annual precipitation in Iowa

Annual precipitation in Iowa was 33.57 inches in 2025. Source: NOAA National Centers for Environmental Information.

- Indicator id: `precipitation_annual`
- Place id: `us-state-19`
- Unit: inches
- Definition: Total precipitation from January to December, in inches: rain plus the water content of snow and other frozen precipitation. NOAA computes it from its climate divisional dataset (nClimDiv): station readings interpolated onto a 5 km grid and averaged over the area.
- Note: Values are area averages, not the reading at one weather station. NOAA revises the last two years every month.
- Source: NOAA National Centers for Environmental Information, NOAA Climate at a Glance, January to December precipitation, contiguous US and statewide (https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/time-series/13/pcp/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 precipitation, 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/pcp/12/12/1895-2025/data.json. Retrieved 2026-10-12.
- Web page: https://invokely.ai/en/annual-precipitation/iowa
- API: https://invokely.ai/api/v1/series?indicator=precipitation_annual&place=us-state-19

| Period | inches |
|---|---:|
| 2025 | 33.57 |
| 2024 | 37.05 |
| 2023 | 26.93 |
| 2022 | 27.32 |
| 2021 | 30.84 |
| 2020 | 29.28 |
| 2019 | 41.63 |
| 2018 | 45.08 |
| 2017 | 32.35 |
| 2016 | 38.1 |
| 2015 | 42.51 |
| 2014 | 38.69 |
| 2013 | 34.44 |
| 2012 | 25.6 |
| 2011 | 31.83 |
| 2010 | 44.05 |
| 2009 | 39.15 |
| 2008 | 42.91 |
| 2007 | 42.4 |
| 2006 | 32.4 |
| 2005 | 29.84 |
| 2004 | 35.41 |
| 2003 | 28.69 |
| 2002 | 29.48 |
| 2001 | 34.59 |
| 2000 | 29.73 |
| 1999 | 32.28 |
| 1998 | 39.57 |
| 1997 | 29.21 |
| 1996 | 33.64 |
| 1995 | 32.25 |
| 1994 | 29.54 |
| 1993 | 47.87 |
| 1992 | 36.21 |
| 1991 | 37.74 |
| 1990 | 38.9 |
| 1989 | 24.69 |
| 1988 | 21.48 |
| 1987 | 32.84 |
| 1986 | 39.9 |
| 1985 | 31.15 |
| 1984 | 36.91 |
| 1983 | 36.51 |
| 1982 | 41.44 |
| 1981 | 31.99 |
| 1980 | 29.09 |
| 1979 | 34.34 |
| 1978 | 34.14 |
| 1977 | 36.59 |
| 1976 | 23.59 |
| 1975 | 30.06 |
| 1974 | 31.98 |
| 1973 | 42.92 |
| 1972 | 37.05 |
| 1971 | 29.51 |
| 1970 | 33.52 |
| 1969 | 34.77 |
| 1968 | 32.8 |
| 1967 | 30.13 |
| 1966 | 25.32 |
| 1965 | 40.25 |
| 1964 | 31.25 |
| 1963 | 27.12 |
| 1962 | 31.05 |
| 1961 | 37.26 |
| 1960 | 33.81 |
| 1959 | 38 |
| 1958 | 25.32 |
| 1957 | 31.52 |
| 1956 | 24.28 |
| 1955 | 22.97 |
| 1954 | 34.18 |
| 1953 | 25.79 |
| 1952 | 29.51 |
| 1951 | 41.97 |
| 1950 | 29.02 |
| 1949 | 28.16 |
| 1948 | 28.52 |
| 1947 | 34.44 |
| 1946 | 34.85 |
| 1945 | 34.21 |
| 1944 | 36.66 |
| 1943 | 31.09 |
| 1942 | 32.57 |
| 1941 | 36.15 |
| 1940 | 30.5 |
| 1939 | 24.5 |
| 1938 | 36.32 |
| 1937 | 27.49 |
| 1936 | 25.54 |
| 1935 | 32.52 |
| 1934 | 26.73 |
| 1933 | 24.5 |
| 1932 | 31.67 |
| 1931 | 34.59 |
| 1930 | 26.09 |
| 1929 | 29.45 |
| 1928 | 35.46 |
| 1927 | 29.29 |
| 1926 | 32.33 |
| 1925 | 27.93 |
| 1924 | 31 |
| 1923 | 29.63 |
| 1922 | 29.57 |
| 1921 | 32 |
| 1920 | 31.06 |
| 1919 | 36.4 |
| 1918 | 32.54 |
| 1917 | 27.62 |
| 1916 | 28.5 |
| 1915 | 38.98 |
| 1914 | 31.65 |
| 1913 | 30.07 |
| 1912 | 28.41 |
| 1911 | 31.63 |
| 1910 | 20.21 |
| 1909 | 39.67 |
| 1908 | 34.74 |
| 1907 | 31.6 |
| 1906 | 31.49 |
| 1905 | 36.11 |
| 1904 | 27.94 |
| 1903 | 35.43 |
| 1902 | 43.78 |
| 1901 | 24.5 |
| 1900 | 35.44 |
| 1899 | 28.45 |
| 1898 | 30.09 |
| 1897 | 26.23 |
| 1896 | 36.78 |
| 1895 | 26.33 |