# Annual precipitation in McDonough County

Annual precipitation in McDonough County was 28.93 inches in 2025. Source: NOAA National Centers for Environmental Information.

- Indicator id: `precipitation_annual`
- Place id: `us-county-17109`
- 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, counties (https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping)
- 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, counties. 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/county/mapping. Retrieved 2026-10-12.
- Web page: https://invokely.ai/en/annual-precipitation/mcdonough-county-illinois
- API: https://invokely.ai/api/v1/series?indicator=precipitation_annual&place=us-county-17109

| Period | inches |
|---|---:|
| 2025 | 28.93 |
| 2024 | 37.71 |
| 2023 | 30.69 |
| 2022 | 32.96 |
| 2021 | 41.47 |
| 2020 | 36.25 |
| 2019 | 52.48 |
| 2018 | 45.56 |
| 2017 | 33.36 |
| 2016 | 33.16 |
| 2015 | 51.51 |
| 2014 | 40.66 |
| 2013 | 41.78 |
| 2012 | 25.51 |
| 2011 | 38.84 |
| 2010 | 52.65 |
| 2009 | 51.38 |
| 2008 | 44.35 |
| 2007 | 31.57 |
| 2006 | 33.71 |
| 2005 | 28.18 |
| 2004 | 35.39 |
| 2003 | 37.35 |
| 2002 | 38 |
| 2001 | 42.57 |
| 2000 | 34.41 |
| 1999 | 32.97 |
| 1998 | 46.69 |
| 1997 | 36.01 |
| 1996 | 35.28 |
| 1995 | 41.39 |
| 1994 | 33.38 |
| 1993 | 51.64 |
| 1992 | 35.44 |
| 1991 | 36.5 |
| 1990 | 48.46 |
| 1989 | 24.47 |
| 1988 | 22.92 |
| 1987 | 28.5 |
| 1986 | 40 |
| 1985 | 47.9 |
| 1984 | 42.6 |
| 1983 | 32.99 |
| 1982 | 47.7 |
| 1981 | 45.07 |
| 1980 | 37.65 |
| 1979 | 31.34 |
| 1978 | 33.38 |
| 1977 | 39.85 |
| 1976 | 28.79 |
| 1975 | 33.91 |
| 1974 | 40.79 |
| 1973 | 49.3 |
| 1972 | 33.79 |
| 1971 | 31.87 |
| 1970 | 46.87 |
| 1969 | 36.95 |
| 1968 | 31.63 |
| 1967 | 39.59 |
| 1966 | 31.03 |
| 1965 | 43.97 |
| 1964 | 32.08 |
| 1963 | 24.89 |
| 1962 | 30.14 |
| 1961 | 48.28 |
| 1960 | 38.9 |
| 1959 | 36.91 |
| 1958 | 31.8 |
| 1957 | 37.39 |
| 1956 | 25.75 |
| 1955 | 35.39 |
| 1954 | 38.99 |
| 1953 | 25.41 |
| 1952 | 36.9 |
| 1951 | 36.76 |
| 1950 | 30.62 |