Rapid City - Extreme Daily Precipitation for Each Year
This page lists the biggest rainstorms or snowstorms of the year in Rapid City, South Dakota along with the date they occurred. The information answers questions like: When was the last time more than three inches of precipitation landed on Rapid City in a single day? What was the rainiest day of 2019?
The list gives the highest daily precipitation for each year in Rapid City and the date that it happened. A date with a plus sign beside it means the same amount of moisture also fell on at least one other day earlier that year.
These records were observed at Rapid City Regional Airport and go back to 1949. During that time the heaviest downpour measured for a single day was 3.78 inches (96.0 millimetres) on June 15, 1963.
| Inches | Date | Millimetres |
|---|---|---|
| 1.97 | October 12, 2023 | 50.0 |
| 1.47 | August 25, 2022 | 37.3 |
| 1.91 | June 08, 2021 | 48.5 |
| 1.51 | June 04, 2020 | 38.4 |
| 2.34 | May 21, 2019 | 59.4 |
| 1.59 | June 24, 2018 | 40.4 |
| 1.37 | August 14, 2017 | 34.8 |
| 1.18 | June 13, 2016 | 30.0 |
| 2.46 | July 15, 2015 | 62.5 |
| 2.05 | September 29, 2014 | 52.1 |
| 1.74 | October 04, 2013 | 44.2 |
| 0.90 | April 14, 2012 | 22.9 |
| 2.05 | May 19, 2011 | 52.1 |
| 1.81 | May 10, 2010 | 46.0 |
| Inches | Date | Millimetres |
|---|---|---|
| 1.40 | September 12, 2009 | 35.6 |
| 2.09 | May 22, 2008 | 53.1 |
| 1.10 | May 05, 2007 | 27.9 |
| 0.88 | August 27, 2006 | 22.4 |
| 1.22 | May 11, 2005 | 31.0 |
| 1.21 | July 04, 2004 | 30.7 |
| 0.86 | September 10, 2003 | 21.8 |
| 1.00 | April 27, 2002 | 25.4 |
| 1.25 | June 09, 2001 | 31.8 |
| 1.27 | July 09, 2000 | 32.3 |
| 2.80 | May 21, 1999 | 71.1 |
| 1.67 | October 04, 1998 | 42.4 |
| 3.19 | April 05, 1997 | 81.0 |
| 1.74 | May 23, 1996 | 44.2 |
| 1.63 | June 21, 1995 | 41.4 |
| 0.83 | October 15, 1994 | 21.1 |
| 1.56 | June 07, 1993 | 39.6 |
| 0.98 | July 21, 1992 | 24.9 |
| 0.92 | April 26, 1991 | 23.4 |
| 1.76 | September 05, 1990 | 44.7 |
| 1.18 | September 20, 1989 | 30.0 |
| 1.86 | May 01, 1988 | 47.2 |
| 0.98 | May 20, 1987 | 24.9 |
| 2.18 | June 09, 1986 | 55.4 |
| 1.16 | August 19, 1985 | 29.5 |
| 1.64 | April 25, 1984 | 41.7 |
| 1.59 | June 30, 1983 | 40.4 |
| 2.60 | August 04, 1982 | 66.0 |
| 1.47 | August 13, 1981 | 37.3 |
| 2.51 | June 14, 1980 | 63.8 |
| 1.23 | August 07, 1979 | 31.2 |
| 1.21 | July 21, 1978 + | 30.7 |
| 1.32 | September 23, 1977 | 33.5 |
| 3.60 | June 14, 1976 | 91.4 |
| 1.69 | June 18, 1975 | 42.9 |
| 0.80 | April 11, 1974 | 20.3 |
| 1.26 | March 14, 1973 | 32.0 |
| 2.08 | June 09, 1972 | 52.8 |
| 1.50 | May 23, 1971 | 38.1 |
| 1.67 | April 18, 1970 | 42.4 |
| 1.80 | July 16, 1969 | 45.7 |
| 1.78 | June 24, 1968 | 45.2 |
| 2.06 | April 30, 1967 | 52.3 |
| 2.13 | September 13, 1966 | 54.1 |
| 3.21 | May 14, 1965 | 81.5 |
| 1.40 | June 08, 1964 | 35.6 |
| 3.78 | June 15, 1963 | 96.0 |
| 1.86 | May 21, 1962 | 47.2 |
| 1.10 | July 01, 1961 | 27.9 |
| 1.33 | May 23, 1960 | 33.8 |
| 1.09 | May 30, 1959 | 27.7 |
| 1.95 | July 19, 1958 | 49.5 |
| 1.51 | May 20, 1957 | 38.4 |
| 1.13 | July 02, 1956 | 28.7 |
| 1.83 | September 20, 1955 | 46.5 |
| 1.08 | March 12, 1954 | 27.4 |
| 1.74 | June 19, 1953 | 44.2 |
| 0.94 | May 22, 1952 | 23.9 |
| 1.31 | June 01, 1951 | 33.3 |
| 1.36 | September 20, 1950 | 34.5 |
| 1.75 | June 02, 1949 | 44.5 |
Reference
Jay Lawrimore. 2016. Global Summary of the Year, Version 1.0. NOAA National Centers for Environmental Information.