# Annual precipitation in Penobscot County

Annual precipitation in Penobscot County was 38.55 inches in 2025. Source: NOAA National Centers for Environmental Information.

- Indicator id: `precipitation_annual`
- Place id: `us-county-23019`
- 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/penobscot-county-maine
- API: https://invokely.ai/api/v1/series?indicator=precipitation_annual&place=us-county-23019

| Period | inches |
|---|---:|
| 2025 | 38.55 |
| 2024 | 41.28 |
| 2023 | 52.82 |
| 2022 | 50.54 |
| 2021 | 40.85 |
| 2020 | 40.34 |
| 2019 | 51.09 |
| 2018 | 44.84 |
| 2017 | 42.63 |
| 2016 | 38.37 |
| 2015 | 44.3 |
| 2014 | 47.5 |
| 2013 | 43.46 |
| 2012 | 45.17 |
| 2011 | 45.71 |
| 2010 | 47.1 |
| 2009 | 47.16 |
| 2008 | 53.71 |
| 2007 | 45.52 |
| 2006 | 52.45 |
| 2005 | 64.44 |
| 2004 | 36.99 |
| 2003 | 45.54 |
| 2002 | 40.46 |
| 2001 | 26.4 |
| 2000 | 41.08 |
| 1999 | 46.95 |
| 1998 | 42.45 |
| 1997 | 38.75 |
| 1996 | 50.21 |
| 1995 | 40.44 |
| 1994 | 38.5 |
| 1993 | 42.77 |
| 1992 | 34.26 |
| 1991 | 43.72 |
| 1990 | 51.09 |
| 1989 | 43.33 |
| 1988 | 36.24 |
| 1987 | 36.2 |
| 1986 | 40.66 |
| 1985 | 34.18 |
| 1984 | 42.17 |
| 1983 | 57.79 |
| 1982 | 36.43 |
| 1981 | 52.25 |
| 1980 | 39.65 |
| 1979 | 53.41 |
| 1978 | 34.41 |
| 1977 | 47.47 |
| 1976 | 50.68 |
| 1975 | 40.52 |
| 1974 | 41.36 |
| 1973 | 54.1 |
| 1972 | 49.62 |
| 1971 | 34.79 |
| 1970 | 40.9 |
| 1969 | 50.35 |
| 1968 | 36.79 |
| 1967 | 41.63 |
| 1966 | 37.72 |
| 1965 | 31.79 |
| 1964 | 35.1 |
| 1963 | 42.35 |
| 1962 | 42.31 |
| 1961 | 45.69 |
| 1960 | 43.71 |
| 1959 | 49.4 |
| 1958 | 45.53 |
| 1957 | 35.22 |
| 1956 | 37.04 |
| 1955 | 34.93 |
| 1954 | 56.54 |
| 1953 | 46.68 |
| 1952 | 36.26 |
| 1951 | 48.95 |
| 1950 | 46.68 |