# Annual precipitation in Montgomery County

Annual precipitation in Montgomery County was 31.82 inches in 2025. Source: NOAA National Centers for Environmental Information.

- Indicator id: `precipitation_annual`
- Place id: `us-county-17135`
- 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/montgomery-county-illinois
- API: https://invokely.ai/api/v1/series?indicator=precipitation_annual&place=us-county-17135

| Period | inches |
|---|---:|
| 2025 | 31.82 |
| 2024 | 42.08 |
| 2023 | 36.28 |
| 2022 | 42.05 |
| 2021 | 42.59 |
| 2020 | 41.95 |
| 2019 | 48.88 |
| 2018 | 42.95 |
| 2017 | 36.17 |
| 2016 | 38.37 |
| 2015 | 51.39 |
| 2014 | 43.39 |
| 2013 | 41.39 |
| 2012 | 35.62 |
| 2011 | 47.34 |
| 2010 | 46.55 |
| 2009 | 50.24 |
| 2008 | 53.24 |
| 2007 | 30.74 |
| 2006 | 34.64 |
| 2005 | 35.32 |
| 2004 | 43.09 |
| 2003 | 40.97 |
| 2002 | 44.39 |
| 2001 | 38.43 |
| 2000 | 42.22 |
| 1999 | 32.94 |
| 1998 | 42.11 |
| 1997 | 32.64 |
| 1996 | 39.83 |
| 1995 | 38.14 |
| 1994 | 38.83 |
| 1993 | 50.01 |
| 1992 | 34.67 |
| 1991 | 33.13 |
| 1990 | 50.29 |
| 1989 | 30.59 |
| 1988 | 32.06 |
| 1987 | 31.23 |
| 1986 | 34.96 |
| 1985 | 45.52 |
| 1984 | 42.76 |
| 1983 | 42.99 |
| 1982 | 51.6 |
| 1981 | 41.13 |
| 1980 | 30.17 |
| 1979 | 37.04 |
| 1978 | 35.97 |
| 1977 | 43.78 |
| 1976 | 26.33 |
| 1975 | 40.69 |
| 1974 | 44.82 |
| 1973 | 50.07 |
| 1972 | 38.83 |
| 1971 | 35.69 |
| 1970 | 37.82 |
| 1969 | 44.94 |
| 1968 | 36.35 |
| 1967 | 46.23 |
| 1966 | 40.2 |
| 1965 | 35.84 |
| 1964 | 28.66 |
| 1963 | 31.66 |
| 1962 | 37.88 |
| 1961 | 41.32 |
| 1960 | 33.96 |
| 1959 | 36.9 |
| 1958 | 36.4 |
| 1957 | 50.21 |
| 1956 | 34.14 |
| 1955 | 35.18 |
| 1954 | 27.96 |
| 1953 | 26.12 |
| 1952 | 29.98 |
| 1951 | 40.4 |
| 1950 | 41.22 |