# Annual precipitation in Macon County

Annual precipitation in Macon County was 29.42 inches in 2025. Source: NOAA National Centers for Environmental Information.

- Indicator id: `precipitation_annual`
- Place id: `us-county-17115`
- 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/macon-county-illinois
- API: https://invokely.ai/api/v1/series?indicator=precipitation_annual&place=us-county-17115

| Period | inches |
|---|---:|
| 2025 | 29.42 |
| 2024 | 43.01 |
| 2023 | 31.69 |
| 2022 | 40.09 |
| 2021 | 43.71 |
| 2020 | 39.92 |
| 2019 | 46.33 |
| 2018 | 42.75 |
| 2017 | 33.16 |
| 2016 | 35.57 |
| 2015 | 42.11 |
| 2014 | 43.5 |
| 2013 | 37.38 |
| 2012 | 27.26 |
| 2011 | 38.41 |
| 2010 | 41.05 |
| 2009 | 50.82 |
| 2008 | 54.33 |
| 2007 | 32.18 |
| 2006 | 38.17 |
| 2005 | 34.58 |
| 2004 | 41.36 |
| 2003 | 35.62 |
| 2002 | 40.78 |
| 2001 | 38.68 |
| 2000 | 33.79 |
| 1999 | 35.39 |
| 1998 | 41.13 |
| 1997 | 34.48 |
| 1996 | 36.54 |
| 1995 | 35.21 |
| 1994 | 37.19 |
| 1993 | 47.09 |
| 1992 | 40.93 |
| 1991 | 34.55 |
| 1990 | 51.81 |
| 1989 | 30.66 |
| 1988 | 26.78 |
| 1987 | 32.52 |
| 1986 | 36.2 |
| 1985 | 45.53 |
| 1984 | 37.02 |
| 1983 | 39.12 |
| 1982 | 44.64 |
| 1981 | 45.91 |
| 1980 | 29.88 |
| 1979 | 35.95 |
| 1978 | 34.71 |
| 1977 | 46.85 |
| 1976 | 27.51 |
| 1975 | 44.36 |
| 1974 | 46.41 |
| 1973 | 50.36 |
| 1972 | 41.56 |
| 1971 | 40.11 |
| 1970 | 36.14 |
| 1969 | 39.17 |
| 1968 | 39.78 |
| 1967 | 42.8 |
| 1966 | 36.09 |
| 1965 | 44.26 |
| 1964 | 33.96 |
| 1963 | 29.27 |
| 1962 | 31.45 |
| 1961 | 41.16 |
| 1960 | 34.03 |
| 1959 | 34.63 |
| 1958 | 36.82 |
| 1957 | 45.13 |
| 1956 | 31.43 |
| 1955 | 38.29 |
| 1954 | 28.74 |
| 1953 | 28.41 |
| 1952 | 34.13 |
| 1951 | 43.21 |
| 1950 | 39.28 |