Jefferson County, TN
: September 2026 so far averaged 75.3°F in Jefferson County, TN, the warmest 1 to 29 September in the county average since 2019, 3rd 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.
- Tuesday 29 September 2026: a high of 77.8°F averaged over Jefferson County, TN, the warmest 29 September in the county average since 2025, 37th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 47°F averaged over Jefferson County, TN, the coldest 29 September night in the county average since 2022, 20th coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
- No measurable precipitation in the county average of Jefferson County, TN for 5 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
The month
- August 2026 averaged 77.8°F in Jefferson County, TN, the warmest August in the county average since 2016, tied 21st warmest of 132 (with 1935) (county average from NOAA's monthly county data, 1895 to 2026).
- Days of the month without a value
- 0
Every year on this date
- Above the normal range
- In it
- Below it
- Normal range
- This year and the extreme
Every year as a table
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 77.8 | 47 |
| 2025 | 83.1 | 60.7 |
| 2024 | 73.1 | 64.4 |
| 2023 | 79.6 | 58 |
| 2022 | 68.5 | 40.7 |
| 2021 | 81.1 | 55.2 |
| 2020 | 83 | 55 |
| 2019 | 91.8 | 68.1 |
| 2018 | 75.8 | 61.6 |
| 2017 | 86.7 | 59 |
| 2016 | 82 | 51.2 |
| 2015 | 83.3 | 65.4 |
| 2014 | 77.9 | 58 |
| 2013 | 77.5 | 55.1 |
| 2012 | 79 | 60.5 |
| 2011 | 78.1 | 54 |
| 2010 | 70.8 | 54.3 |
| 2009 | 76.6 | 47.3 |
| 2008 | 79.6 | 56.2 |
| 2007 | 81.3 | 46.6 |
| 2006 | 71.3 | 44.2 |
| 2005 | 84 | 60.7 |
| 2004 | 74.1 | 56.3 |
| 2003 | 66.7 | 41.1 |
| 2002 | 81.3 | 58.5 |
| 2001 | 70 | 42.6 |
| 2000 | 75.2 | 44.6 |
| 1999 | 80.6 | 67.2 |
| 1998 | 88.2 | 66.8 |
| 1997 | 69.4 | 54.8 |
| 1996 | 70.4 | 47.8 |
| 1995 | 77.9 | 50.4 |
| 1994 | 75.3 | 45.8 |
| 1993 | 71.6 | 40.2 |
| 1992 | 74.5 | 51.3 |
| 1991 | 76.3 | 40.3 |
| 1990 | 79.8 | 53.5 |
| 1989 | 71.2 | 49.8 |
| 1988 | 79.1 | 54.3 |
| 1987 | 81.7 | 52.9 |
| 1986 | 88.3 | 64.4 |
| 1985 | 76.4 | 41.2 |
| 1984 | 64.3 | 52 |
| 1983 | 79.4 | 46.4 |
| 1982 | 77.1 | 48.8 |
| 1981 | 77.4 | 41.1 |
| 1980 | 61.2 | 53.7 |
| 1979 | 75.5 | 63.5 |
| 1978 | 79.7 | 55.5 |
| 1977 | 72.5 | 48.7 |
| 1976 | 75.1 | 60.1 |
| 1975 | 73.4 | 45.8 |
| 1974 | 80.4 | 61.5 |
| 1973 | 84.2 | 63.6 |
| 1972 | 81.3 | 65.3 |
| 1971 | 85.4 | 60.5 |
| 1970 | 70 | 40.2 |
| 1969 | 75.7 | 42.8 |
| 1968 | 81 | 50.3 |
| 1967 | 58.4 | 42.5 |
| 1966 | 73.9 | 59.6 |
| 1965 | 79 | 49 |
| 1964 | 75.8 | 64.6 |
| 1963 | 67.1 | 54.7 |
| 1962 | 66.9 | 41.1 |
| 1961 | 81.8 | 48.6 |
| 1960 | 72.6 | 61.1 |
| 1959 | 87.8 | 59.8 |
| 1958 | 74.2 | 44.3 |
| 1957 | 60.5 | 48.9 |
| 1956 | 72.9 | 47.3 |
| 1955 | 82 | 58.1 |
| 1954 | 88.3 | 60.4 |
| 1953 | 89.3 | 47.4 |
| 1952 | 83 | 52.7 |
| 1951 | 72.2 | 42.3 |
Nearby
Knoxville, TN 34.4 mi, the nearest city with its own station