Weather on December 20
Knoxville, TN
55 Years of Data
Avg High
50°F
Avg Low
28°F
Warmest
1984
60°F avg
Coldest
2004
19°F avg
About This Date
December 20th in Knoxville, TN typically brings cool winter weather, with average highs around 50°F and lows near 28°F. Over 55 years of records, the warmest December 20th was in 1984 (60°F average), while the coldest was 2004 (19°F) — a 41°F range across recorded history. Precipitation has occurred on 42% of recorded December 20th dates, with snow falling 2% of the time. The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
Planning for December 20th in Knoxville, TN? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Cooling Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 47° | 21° | 34° | — | — |
| 2024 | 42° | 37° | 40° | — | — |
| 2023 | 44° | 24° | 34° | — | — |
| 2022 | 45° | 20° | 32° | — | — |
| 2021 | 55° | 32° | 44° | — | — |
| 2020 | 45° | 25° | 35° | — | — |
| 2019 | 50° | 24° | 37° | — | — |
| 2018 | 49° | 30° | 39° | — | — |
| 2017 | 62° | 35° | 49° | 1.02" | — |
| 2016 | 40° | 25° | 32° | — | — |
| 2015 | 48° | 25° | 36° | — | — |
| 2014 | 47° | 31° | 39° | — | — |
| 2013 | 59° | 32° | 46° | — | — |
| 2012 | 64° | 35° | 50° | 0.18" | — |
| 2011 | 55° | 30° | 43° | — | — |
| 2010 | 38° | 18° | 28° | — | — |
| 2009 | 42° | 33° | 38° | 0.18" | — |
| 2008 | 64° | 45° | 54° | 0.25" | — |
| 2007 | 52° | 30° | 41° | — | — |
| 2006 | 60° | 34° | 47° | — | — |
| 2005 | 41° | 17° | 29° | — | — |
| 2004coldest | 32° | 6° | 19° | — | — |
| 2003 | 37° | 21° | 29° | 0.13" | — |
| 2002 | 66° | 33° | 50° | 2.92" | — |
| 2001 | 58° | 28° | 43° | — | — |
| 2000 | 30° | 13° | 21° | 0.05" | — |
| 1999 | 65° | 38° | 51° | 0.05" | — |
| 1998 | 43° | 22° | 32° | 0.3" | — |
| 1997 | 61° | 25° | 43° | — | — |
| 1996 | 28° | 16° | 22° | 0.03" | — |
| 1995 | 59° | 27° | 43° | 0.28" | — |
| 1994 | 47° | 24° | 35° | — | — |
| 1993 | 49° | 24° | 36° | — | — |
| 1992 | 55° | 30° | 43° | 3.12" | — |
| 1991 | 42° | 21° | 32° | — | — |
| 1990 | 59° | 36° | 47° | 0.03" | — |
| 1989 | 33° | 19° | 26° | 0.13" | — |
| 1988 | 59° | 26° | 43° | — | — |
| 1987 | 66° | 45° | 55° | 0.08" | — |
| 1986 | 47° | 25° | 36° | — | — |
| 1985 | 35° | 23° | 29° | 0.08" | 0.4" |
| 1984warmest | 67° | 54° | 60° | 0.81" | — |
| 1983 | 41° | 28° | 35° | — | — |
| 1982 | 49° | 25° | 37° | — | — |
| 1981 | 32° | 13° | 22° | — | — |
| 1980 | 43° | 19° | 31° | — | — |
| 1979 | 54° | 30° | 42° | — | — |
| 1978 | 64° | 43° | 53° | 0.08" | — |
| 1977 | 59° | 36° | 47° | 0.23" | — |
| 1976 | 65° | 46° | 55° | 0.97" | — |
| 1975 | 40° | 24° | 32° | — | — |
| 1974 | 55° | 33° | 44° | — | — |
| 1973 | 44° | 35° | 40° | 1.3" | — |
| 1972 | 55° | 40° | 47° | 0.25" | — |
| 1971 | 48° | 33° | 41° | 1.17" | — |
55 years of data from KNOXVILLE UNIV OF TENN