Weather on December 18
Knoxville, TN
55 Years of Data
Avg High
49°F
Avg Low
29°F
Warmest
1984
56°F avg
Coldest
2000
20°F avg
About This Date
December 18th in Knoxville, TN typically brings chilly winter weather, with average highs around 49°F and lows near 29°F. Over 55 years of records, the warmest December 18th was in 1984 (56°F average), while the coldest was 2000 (20°F) — a 36°F range across recorded history. Rain or other precipitation has occurred on about 29% of December 18th dates historically, with the wettest December 18th recording 1.93" of rain. The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
Planning for December 18th in Knoxville, TN? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 52° | 25° | 38° | — | — |
| 2024 | 68° | 44° | 56° | 0.99" | — |
| 2023 | 54° | 29° | 41° | 0.61" | — |
| 2022 | 49° | 32° | 40° | — | — |
| 2021 | 66° | 32° | 49° | — | — |
| 2020 | 40° | 32° | 36° | — | — |
| 2019 | 43° | 26° | 34° | — | — |
| 2018 | 56° | 35° | 45° | — | — |
| 2017 | 40° | 21° | 30° | — | — |
| 2016 | 68° | 32° | 50° | 0.51" | — |
| 2015 | 45° | 28° | 36° | — | — |
| 2014 | 54° | 27° | 40° | — | — |
| 2013 | 47° | 27° | 37° | — | — |
| 2012 | 58° | 43° | 50° | 0.86" | — |
| 2011 | 44° | 25° | 34° | — | — |
| 2010 | 39° | 31° | 35° | — | — |
| 2009 | 51° | 32° | 42° | 0.36" | — |
| 2008 | 59° | 49° | 54° | 1.42" | — |
| 2007 | 41° | 20° | 30° | — | — |
| 2006 | 68° | 34° | 51° | — | — |
| 2005 | 45° | 26° | 35° | — | — |
| 2004 | 46° | 17° | 32° | — | — |
| 2003 | 42° | 29° | 35° | — | — |
| 2002 | 64° | 35° | 50° | — | — |
| 2001 | 66° | 43° | 54° | 1.93" | — |
| 2000coldest | 26° | 14° | 20° | — | — |
| 1999 | 58° | 26° | 42° | — | — |
| 1998 | 42° | 21° | 32° | 0.13" | — |
| 1997 | 56° | 22° | 39° | — | — |
| 1996 | 45° | 32° | 38° | — | — |
| 1995 | 49° | 42° | 45° | 0.08" | — |
| 1994 | 48° | 41° | 45° | — | — |
| 1993 | 58° | 32° | 45° | 0.13" | — |
| 1992 | 58° | 27° | 42° | 0.08" | — |
| 1991 | 57° | 24° | 41° | — | — |
| 1990 | 64° | 43° | 53° | 1.19" | — |
| 1989 | 28° | 18° | 23° | — | — |
| 1988 | 38° | 16° | 27° | — | — |
| 1987 | 45° | 22° | 33° | — | — |
| 1986 | 52° | 40° | 46° | 0.89" | — |
| 1985 | 37° | 17° | 27° | — | — |
| 1984warmest | 68° | 45° | 56° | — | — |
| 1983 | 45° | 20° | 32° | — | — |
| 1982 | 47° | 23° | 35° | 0.46" | — |
| 1981 | 49° | 23° | 36° | — | — |
| 1980 | 47° | 31° | 39° | — | — |
| 1979 | 34° | 23° | 28° | — | — |
| 1978 | 48° | 27° | 37° | — | — |
| 1977 | 59° | 43° | 51° | 1.09" | — |
| 1976 | 58° | 34° | 46° | — | — |
| 1975 | 31° | 19° | 25° | — | — |
| 1974 | 42° | 25° | 33° | — | — |
| 1973 | 32° | 18° | 25° | — | — |
| 1972 | 29° | 18° | 23° | — | — |
| 1971 | 52° | 23° | 37° | 0.05" | — |
55 years of data from KNOXVILLE UNIV OF TENN