Lyman County, SD
Tuesday : a low of 62.5°F averaged over Lyman County, SD, the warmest 29 September night in the county average since the data begin in 1951 (county average from NOAA gridded data, 1951 to 2026).
Last updated . This page normally updates every day; the latest update is late.
- High
- 73.9°F
- Warmest since 2025
- 36th warmest of 76
- Low
- 62.5°F
- Warmest since the data begin
- Warmest of 76
- Precipitation
- 0.45 in
- Wettest since 1973
- 3rd wettest of 76
- Normal range, 35.3 to 51.7°F
Every year as a table
Every 29 September high of the county average in Lyman County, SD since 1951: 73.9°F in 2026; the highest is 94.2°F, in 2024.
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 73.9 | 62.5 |
| 2025 | 89 | 56.6 |
| 2024 | 94.2 | 53 |
| 2023 | 80 | 55.2 |
| 2022 | 80 | 44.7 |
| 2021 | 93.5 | 56.7 |
| 2020 | 65.6 | 41.9 |
| 2019 | 56.3 | 44.7 |
| 2018 | 55.5 | 40.9 |
| 2017 | 77.3 | 43.7 |
| 2016 | 69.6 | 39.5 |
| 2015 | 71.4 | 51.6 |
| 2014 | 80.2 | 52.3 |
| 2013 | 69.1 | 42.6 |
| 2012 | 82.1 | 44.5 |
| 2011 | 91.8 | 47.5 |
| 2010 | 81.6 | 44.3 |
| 2009 | 63.1 | 35.3 |
| 2008 | 78.3 | 42 |
| 2007 | 85.1 | 49.8 |
| 2006 | 61.2 | 37.5 |
| 2005 | 61.4 | 36.8 |
| 2004 | 67.6 | 38.4 |
| 2003 | 61.4 | 34.8 |
| 2002 | 53.7 | 44.2 |
| 2001 | 79.1 | 52.1 |
| 2000 | 89 | 43.7 |
| 1999 | 59.3 | 33.7 |
| 1998 | 85.2 | 50.4 |
| 1997 | 75.7 | 50.9 |
| 1996 | 70.8 | 38.9 |
| 1995 | 85.7 | 53.9 |
| 1994 | 79.3 | 40.3 |
| 1993 | 67.3 | 39 |
| 1992 | 68.4 | 30.8 |
| 1991 | 79.5 | 43.2 |
| 1990 | 68.2 | 45.5 |
| 1989 | 85.5 | 49.9 |
| 1988 | 55.5 | 43.6 |
| 1987 | 69.4 | 41.8 |
| 1986 | 72.5 | 42.6 |
| 1985 | 40.2 | 32.2 |
| 1984 | 53.9 | 25.5 |
| 1983 | 73.7 | 45.7 |
| 1982 | 71.9 | 40.3 |
| 1981 | 88.5 | 44.6 |
| 1980 | 86.2 | 50.8 |
| 1979 | 79.5 | 43.7 |
| 1978 | 82.9 | 50.6 |
| 1977 | 73.9 | 51.7 |
| 1976 | 68.6 | 31.1 |
| 1975 | 67.2 | 37.9 |
| 1974 | 65.2 | 35.6 |
| 1973 | 61.3 | 45.6 |
| 1972 | 63.4 | 39.5 |
| 1971 | 71.7 | 42.2 |
| 1970 | 83.1 | 41.6 |
| 1969 | 82.7 | 52.7 |
| 1968 | 66.3 | 41.3 |
| 1967 | 77.3 | 37.2 |
| 1966 | 69.8 | 45.6 |
| 1965 | 44.8 | 39.8 |
| 1964 | 74 | 38.7 |
| 1963 | 69.3 | 36.8 |
| 1962 | 74.7 | 50.5 |
| 1961 | 69.8 | 43.8 |
| 1960 | 66.2 | 40.7 |
| 1959 | 52.4 | 35.9 |
| 1958 | 82.8 | 42.8 |
| 1957 | 85.9 | 54 |
| 1956 | 63.3 | 38.2 |
| 1955 | 78.7 | 44.9 |
| 1954 | 78.7 | 44 |
| 1953 | 77.7 | 44.9 |
| 1952 | 82.7 | 51 |
| 1951 | 68.3 | 29.9 |
The month
September 2026 so far averaged 67.5°F in Lyman County, SD, the warmest 1 to 29 September in the county average since 2024, 9th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
The month in words
- August 2026 averaged 73.1°F in Lyman County, SD, the coldest August in the county average since 2024, tied 64th coldest of 132 (with 1996, 1990 and 1978) (county average from NOAA's monthly county data, 1895 to 2026).
- Tuesday 29 September 2026: a high of 73.9°F averaged over Lyman County, SD, the warmest 29 September in the county average since 2025, tied 36th warmest of 76 (with 1977) (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: 0.45 in of precipitation averaged over Lyman County, SD, the wettest 29 September in the county average since 1973, 3rd wettest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Days of the month without a value
- 0
Nearby
Valentine, NE 80.0 mi, the nearest city with its own station