# Annual precipitation in Brown County

Annual precipitation in Brown County was 29.55 inches in 2025. Source: NOAA National Centers for Environmental Information.

- Indicator id: `precipitation_annual`
- Place id: `us-county-17009`
- 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/brown-county-illinois
- API: https://invokely.ai/api/v1/series?indicator=precipitation_annual&place=us-county-17009

| Period | inches |
|---|---:|
| 2025 | 29.55 |
| 2024 | 39.92 |
| 2023 | 26.28 |
| 2022 | 36.12 |
| 2021 | 43.19 |
| 2020 | 36.31 |
| 2019 | 46.68 |
| 2018 | 42.32 |
| 2017 | 38.22 |
| 2016 | 27.72 |
| 2015 | 48.51 |
| 2014 | 41.52 |
| 2013 | 41.89 |
| 2012 | 26.03 |
| 2011 | 38.51 |
| 2010 | 50.55 |
| 2009 | 50.12 |
| 2008 | 51.96 |
| 2007 | 28.5 |
| 2006 | 31.51 |
| 2005 | 28.38 |
| 2004 | 36.41 |
| 2003 | 40.36 |
| 2002 | 37.64 |
| 2001 | 39.76 |
| 2000 | 31.99 |
| 1999 | 27.39 |
| 1998 | 47.25 |
| 1997 | 30.61 |
| 1996 | 31.76 |
| 1995 | 39.45 |
| 1994 | 33.57 |
| 1993 | 52.78 |
| 1992 | 36.41 |
| 1991 | 43.81 |
| 1990 | 46.25 |
| 1989 | 24.36 |
| 1988 | 26.01 |
| 1987 | 29.9 |
| 1986 | 41.29 |
| 1985 | 49.07 |
| 1984 | 44.45 |
| 1983 | 35.9 |
| 1982 | 48.99 |
| 1981 | 47.13 |
| 1980 | 35.49 |
| 1979 | 29.39 |
| 1978 | 32.95 |
| 1977 | 43.97 |
| 1976 | 26.08 |
| 1975 | 38.32 |
| 1974 | 40.76 |
| 1973 | 55.54 |
| 1972 | 31.6 |
| 1971 | 30.27 |
| 1970 | 51.39 |
| 1969 | 44.34 |
| 1968 | 37.9 |
| 1967 | 42.45 |
| 1966 | 33.75 |
| 1965 | 45.53 |
| 1964 | 33.68 |
| 1963 | 28.53 |
| 1962 | 32.44 |
| 1961 | 49.58 |
| 1960 | 36.65 |
| 1959 | 32.3 |
| 1958 | 36.67 |
| 1957 | 41.13 |
| 1956 | 25.4 |
| 1955 | 38.97 |
| 1954 | 32.58 |
| 1953 | 21.78 |
| 1952 | 33.67 |
| 1951 | 39.94 |
| 1950 | 30.04 |