# Annual precipitation in Roberts County

Annual precipitation in Roberts County was 28.66 inches in 2025. Source: NOAA National Centers for Environmental Information.

- Indicator id: `precipitation_annual`
- Place id: `us-county-46109`
- 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/roberts-county-south-dakota
- API: https://invokely.ai/api/v1/series?indicator=precipitation_annual&place=us-county-46109

| Period | inches |
|---|---:|
| 2025 | 28.66 |
| 2024 | 24 |
| 2023 | 26.17 |
| 2022 | 21.79 |
| 2021 | 28.31 |
| 2020 | 16.65 |
| 2019 | 34.41 |
| 2018 | 23.39 |
| 2017 | 21.02 |
| 2016 | 24.47 |
| 2015 | 20.66 |
| 2014 | 22.46 |
| 2013 | 28.63 |
| 2012 | 19.36 |
| 2011 | 24.57 |
| 2010 | 27.17 |
| 2009 | 27.24 |
| 2008 | 28.02 |
| 2007 | 29.03 |
| 2006 | 21.84 |
| 2005 | 28.64 |
| 2004 | 27.77 |
| 2003 | 19.44 |
| 2002 | 22.24 |
| 2001 | 25.11 |
| 2000 | 23.03 |
| 1999 | 20.56 |
| 1998 | 28.09 |
| 1997 | 21.5 |
| 1996 | 24.02 |
| 1995 | 29.95 |
| 1994 | 24.06 |
| 1993 | 28.46 |
| 1992 | 19.91 |
| 1991 | 29.18 |
| 1990 | 19.91 |
| 1989 | 20.98 |
| 1988 | 19.34 |
| 1987 | 15.27 |
| 1986 | 31.12 |
| 1985 | 22.14 |
| 1984 | 25.69 |
| 1983 | 19.43 |
| 1982 | 19.65 |
| 1981 | 19.25 |
| 1980 | 15.68 |
| 1979 | 22.48 |
| 1978 | 21.02 |
| 1977 | 31.62 |
| 1976 | 8.6 |
| 1975 | 22.11 |
| 1974 | 14.54 |
| 1973 | 17.39 |
| 1972 | 20.8 |
| 1971 | 24.76 |
| 1970 | 19.44 |
| 1969 | 18.71 |
| 1968 | 23.48 |
| 1967 | 17.35 |
| 1966 | 19.73 |
| 1965 | 28.57 |
| 1964 | 19.08 |
| 1963 | 22.88 |
| 1962 | 31.62 |
| 1961 | 19.55 |
| 1960 | 21.2 |
| 1959 | 17.05 |
| 1958 | 14.76 |
| 1957 | 30.54 |
| 1956 | 22.19 |
| 1955 | 19.62 |
| 1954 | 20.55 |
| 1953 | 25.34 |
| 1952 | 16.64 |
| 1951 | 25.11 |
| 1950 | 20.23 |