Custer County, SD
: September 2026 so far averaged 63.5°F in Custer County, SD, the warmest 1 to 29 September in the county average since 2024, 8th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
Last updated . This page normally updates every day; the latest update is late.
- High
- 71°F
- Warmest since 2025
- 35th warmest of 76
- Low
- 50.2°F
- Warmest since 2025
- 6th warmest of 76
- Precipitation
- 0.03 in
- Wettest since 2019
- 12th wettest of 76
- Normal range, 33.6 to 48°F
Every year as a table
Every 29 September high of the county average in Custer County, SD since 1951: 71°F in 2026; the highest is 89.9°F, in 2024.
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 71 | 50.2 |
| 2025 | 85.2 | 52 |
| 2024 | 89.9 | 57.4 |
| 2023 | 71.5 | 48.8 |
| 2022 | 83.9 | 48.7 |
| 2021 | 85.8 | 50.7 |
| 2020 | 63 | 36.8 |
| 2019 | 53.7 | 43.6 |
| 2018 | 43.7 | 33.8 |
| 2017 | 68.1 | 42.4 |
| 2016 | 77.5 | 42.6 |
| 2015 | 59.3 | 50.4 |
| 2014 | 60 | 48 |
| 2013 | 64.4 | 37.3 |
| 2012 | 74.8 | 45.8 |
| 2011 | 82.9 | 47.4 |
| 2010 | 87.2 | 48 |
| 2009 | 62.5 | 31.5 |
| 2008 | 75 | 37.3 |
| 2007 | 81.2 | 48 |
| 2006 | 70.7 | 31.6 |
| 2005 | 61.5 | 35.3 |
| 2004 | 68.1 | 39.8 |
| 2003 | 57.2 | 36.1 |
| 2002 | 59.3 | 39.8 |
| 2001 | 82.8 | 51.4 |
| 2000 | 79.8 | 42.5 |
| 1999 | 54.5 | 28.4 |
| 1998 | 78.2 | 42.7 |
| 1997 | 67.6 | 40 |
| 1996 | 69.1 | 40.1 |
| 1995 | 79.6 | 46.1 |
| 1994 | 86.9 | 44 |
| 1993 | 64.6 | 37.6 |
| 1992 | 72.9 | 35.1 |
| 1991 | 81.9 | 44 |
| 1990 | 64.6 | 42.3 |
| 1989 | 79 | 50 |
| 1988 | 49.8 | 39.6 |
| 1987 | 65.6 | 36.6 |
| 1986 | 59 | 34.3 |
| 1985 | 31.4 | 23.7 |
| 1984 | 46.2 | 19 |
| 1983 | 63.6 | 38.2 |
| 1982 | 57 | 36.6 |
| 1981 | 84.7 | 44.6 |
| 1980 | 86.2 | 44.6 |
| 1979 | 78.5 | 40.7 |
| 1978 | 73.4 | 45.4 |
| 1977 | 77.7 | 42.6 |
| 1976 | 69.8 | 29.6 |
| 1975 | 63.5 | 35.1 |
| 1974 | 63.6 | 36.4 |
| 1973 | 64.1 | 38.2 |
| 1972 | 59.2 | 31.7 |
| 1971 | 60.2 | 37.4 |
| 1970 | 76.7 | 35.5 |
| 1969 | 85.2 | 47.3 |
| 1968 | 61.5 | 36.4 |
| 1967 | 81.4 | 38.8 |
| 1966 | 66.7 | 43.4 |
| 1965 | 39.1 | 32 |
| 1964 | 70.9 | 35.4 |
| 1963 | 69.2 | 34.7 |
| 1962 | 72.8 | 46.9 |
| 1961 | 73.5 | 36.9 |
| 1960 | 62.9 | 40.1 |
| 1959 | 44 | 30.6 |
| 1958 | 73.1 | 41.1 |
| 1957 | 86.6 | 44.6 |
| 1956 | 62.8 | 39.3 |
| 1955 | 70.4 | 40 |
| 1954 | 58.7 | 36.5 |
| 1953 | 73.3 | 45.3 |
| 1952 | 80 | 46.4 |
| 1951 | 72.6 | 38.6 |
The month
August 2026 averaged 72.1°F in Custer County, SD, the warmest August in the county average since 2022, 10th warmest of 132 (county average from NOAA's monthly county data, 1895 to 2026).
The month in words
- Tuesday 29 September 2026: a high of 71°F averaged over Custer County, SD, the warmest 29 September in the county average since 2025, 35th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 50.2°F averaged over Custer County, SD, the warmest 29 September night in the county average since 2025, 6th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: 0.03 in of precipitation averaged over Custer County, SD, the wettest 29 September in the county average since 2019, tied 12th wettest of 76 (with 1959) (county average from NOAA gridded data, 1951 to 2026).
- Days of the month without a value
- 0
Nearby
Rapid City Downtown, SD 29.0 mi, the nearest city with its own station